configure.ac 76 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848849850851852853854855856857858859860861862863864865866867868869870871872873874875876877878879880881882883884885886887888889890891892893894895896897898899900901902903904905906907908909910911912913914915916917918919920921922923924925926927928929930931932933934935936937938939940941942943944945946947948949950951952953954955956957958959960961962963964965966967968969970971972973974975976977978979980981982983984985986987988989990991992993994995996997998999100010011002100310041005100610071008100910101011101210131014101510161017101810191020102110221023102410251026102710281029103010311032103310341035103610371038103910401041104210431044104510461047104810491050105110521053105410551056105710581059106010611062106310641065106610671068106910701071107210731074107510761077107810791080108110821083108410851086108710881089109010911092109310941095109610971098109911001101110211031104110511061107110811091110111111121113111411151116111711181119112011211122112311241125112611271128112911301131113211331134113511361137113811391140114111421143114411451146114711481149115011511152115311541155115611571158115911601161116211631164116511661167116811691170117111721173117411751176117711781179118011811182118311841185118611871188118911901191119211931194119511961197119811991200120112021203120412051206120712081209121012111212121312141215121612171218121912201221122212231224122512261227122812291230123112321233123412351236123712381239124012411242124312441245124612471248124912501251125212531254125512561257125812591260126112621263126412651266126712681269127012711272127312741275127612771278127912801281128212831284128512861287128812891290129112921293129412951296129712981299130013011302130313041305130613071308130913101311131213131314131513161317131813191320132113221323132413251326132713281329133013311332133313341335133613371338133913401341134213431344134513461347134813491350135113521353135413551356135713581359136013611362136313641365136613671368136913701371137213731374137513761377137813791380138113821383138413851386138713881389139013911392139313941395139613971398139914001401140214031404140514061407140814091410141114121413141414151416141714181419142014211422142314241425142614271428142914301431143214331434143514361437143814391440144114421443144414451446144714481449145014511452145314541455145614571458145914601461146214631464146514661467146814691470147114721473147414751476147714781479148014811482148314841485148614871488148914901491149214931494149514961497149814991500150115021503150415051506150715081509151015111512151315141515151615171518151915201521152215231524152515261527152815291530153115321533153415351536153715381539154015411542154315441545154615471548154915501551155215531554155515561557155815591560156115621563156415651566156715681569157015711572157315741575157615771578157915801581158215831584158515861587158815891590159115921593159415951596159715981599160016011602160316041605160616071608160916101611161216131614161516161617161816191620162116221623162416251626162716281629163016311632163316341635163616371638163916401641164216431644164516461647164816491650165116521653165416551656165716581659166016611662166316641665166616671668166916701671167216731674167516761677167816791680168116821683168416851686168716881689169016911692169316941695169616971698169917001701170217031704170517061707170817091710171117121713171417151716171717181719172017211722172317241725172617271728172917301731173217331734173517361737173817391740174117421743174417451746174717481749175017511752175317541755175617571758175917601761176217631764176517661767176817691770177117721773177417751776177717781779178017811782178317841785178617871788178917901791179217931794179517961797179817991800180118021803180418051806180718081809181018111812181318141815181618171818181918201821182218231824182518261827182818291830183118321833183418351836183718381839184018411842184318441845184618471848184918501851185218531854185518561857185818591860186118621863186418651866186718681869187018711872187318741875187618771878187918801881188218831884188518861887188818891890189118921893189418951896189718981899190019011902190319041905190619071908190919101911191219131914191519161917191819191920192119221923192419251926192719281929193019311932193319341935193619371938193919401941194219431944194519461947194819491950195119521953195419551956195719581959196019611962196319641965196619671968196919701971197219731974197519761977197819791980198119821983198419851986198719881989199019911992199319941995199619971998199920002001200220032004200520062007200820092010201120122013201420152016201720182019202020212022202320242025202620272028202920302031203220332034203520362037203820392040204120422043204420452046204720482049205020512052205320542055205620572058205920602061206220632064206520662067206820692070207120722073207420752076207720782079208020812082208320842085208620872088208920902091209220932094209520962097209820992100210121022103210421052106210721082109211021112112211321142115211621172118211921202121212221232124212521262127212821292130213121322133213421352136213721382139214021412142214321442145214621472148214921502151215221532154215521562157215821592160216121622163216421652166216721682169217021712172217321742175217621772178217921802181218221832184218521862187218821892190219121922193219421952196219721982199220022012202220322042205220622072208220922102211221222132214221522162217221822192220222122222223222422252226222722282229223022312232223322342235223622372238223922402241224222432244224522462247224822492250225122522253225422552256225722582259226022612262226322642265226622672268226922702271227222732274227522762277227822792280228122822283228422852286228722882289229022912292229322942295229622972298229923002301230223032304230523062307230823092310231123122313231423152316231723182319232023212322232323242325232623272328232923302331233223332334233523362337233823392340234123422343234423452346234723482349235023512352235323542355235623572358235923602361236223632364236523662367236823692370237123722373237423752376237723782379238023812382238323842385238623872388238923902391239223932394239523962397239823992400
  1. dnl Copyright (c) 2001-2004, Roger Dingledine
  2. dnl Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson
  3. dnl Copyright (c) 2007-2017, The Tor Project, Inc.
  4. dnl See LICENSE for licensing information
  5. AC_PREREQ([2.63])
  6. AC_INIT([tor],[0.3.4.4-rc-dev])
  7. AC_CONFIG_SRCDIR([src/or/main.c])
  8. AC_CONFIG_MACRO_DIR([m4])
  9. # "foreign" means we don't follow GNU package layout standards
  10. # "1.11" means we require automake version 1.11 or newer
  11. # "subdir-objects" means put .o files in the same directory as the .c files
  12. AM_INIT_AUTOMAKE([foreign 1.11 subdir-objects -Wall -Werror])
  13. m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
  14. AC_CONFIG_HEADERS([orconfig.h])
  15. AC_USE_SYSTEM_EXTENSIONS
  16. AC_CANONICAL_HOST
  17. PKG_PROG_PKG_CONFIG
  18. if test -f "/etc/redhat-release"; then
  19. if test -f "/usr/kerberos/include"; then
  20. CPPFLAGS="$CPPFLAGS -I/usr/kerberos/include"
  21. fi
  22. fi
  23. # Not a no-op; we want to make sure that CPPFLAGS is set before we use
  24. # the += operator on it in src/or/Makefile.am
  25. CPPFLAGS="$CPPFLAGS -I\${top_srcdir}/src/common"
  26. AC_ARG_ENABLE(openbsd-malloc,
  27. AS_HELP_STRING(--enable-openbsd-malloc, [use malloc code from OpenBSD. Linux only]))
  28. AC_ARG_ENABLE(static-openssl,
  29. AS_HELP_STRING(--enable-static-openssl, [link against a static openssl library. Requires --with-openssl-dir]))
  30. AC_ARG_ENABLE(static-libevent,
  31. AS_HELP_STRING(--enable-static-libevent, [link against a static libevent library. Requires --with-libevent-dir]))
  32. AC_ARG_ENABLE(static-zlib,
  33. AS_HELP_STRING(--enable-static-zlib, [link against a static zlib library. Requires --with-zlib-dir]))
  34. AC_ARG_ENABLE(static-tor,
  35. AS_HELP_STRING(--enable-static-tor, [create an entirely static Tor binary. Requires --with-openssl-dir and --with-libevent-dir and --with-zlib-dir]))
  36. AC_ARG_ENABLE(unittests,
  37. AS_HELP_STRING(--disable-unittests, [don't build unit tests for Tor. Risky!]))
  38. AC_ARG_ENABLE(coverage,
  39. AS_HELP_STRING(--enable-coverage, [enable coverage support in the unit-test build]))
  40. AC_ARG_ENABLE(asserts-in-tests,
  41. AS_HELP_STRING(--disable-asserts-in-tests, [disable tor_assert() calls in the unit tests, for branch coverage]))
  42. AC_ARG_ENABLE(system-torrc,
  43. AS_HELP_STRING(--disable-system-torrc, [don't look for a system-wide torrc file]))
  44. AC_ARG_ENABLE(libfuzzer,
  45. AS_HELP_STRING(--enable-libfuzzer, [build extra fuzzers based on 'libfuzzer']))
  46. AC_ARG_ENABLE(oss-fuzz,
  47. AS_HELP_STRING(--enable-oss-fuzz, [build extra fuzzers based on 'oss-fuzz' environment]))
  48. AC_ARG_ENABLE(memory-sentinels,
  49. AS_HELP_STRING(--disable-memory-sentinels, [disable code that tries to prevent some kinds of memory access bugs. For fuzzing only.]))
  50. AC_ARG_ENABLE(rust,
  51. AS_HELP_STRING(--enable-rust, [enable rust integration]))
  52. AC_ARG_ENABLE(cargo-online-mode,
  53. AS_HELP_STRING(--enable-cargo-online-mode, [Allow cargo to make network requests to fetch crates. For builds with rust only.]))
  54. AC_ARG_ENABLE(restart-debugging,
  55. AS_HELP_STRING(--enable-restart-debugging, [Build Tor with support for debugging in-process restart. Developers only.]))
  56. AC_ARG_ENABLE(zstd-advanced-apis,
  57. AS_HELP_STRING(--disable-zstd-advanced-apis, [Build without support for zstd's "static-only" APIs.]))
  58. if test "x$enable_coverage" != "xyes" -a "x$enable_asserts_in_tests" = "xno" ; then
  59. AC_MSG_ERROR([Can't disable assertions outside of coverage build])
  60. fi
  61. AM_CONDITIONAL(UNITTESTS_ENABLED, test "x$enable_unittests" != "xno")
  62. AM_CONDITIONAL(COVERAGE_ENABLED, test "x$enable_coverage" = "xyes")
  63. AM_CONDITIONAL(DISABLE_ASSERTS_IN_UNIT_TESTS, test "x$enable_asserts_in_tests" = "xno")
  64. AM_CONDITIONAL(LIBFUZZER_ENABLED, test "x$enable_libfuzzer" = "xyes")
  65. AM_CONDITIONAL(OSS_FUZZ_ENABLED, test "x$enable_oss_fuzz" = "xyes")
  66. AM_CONDITIONAL(USE_RUST, test "x$enable_rust" = "xyes")
  67. if test "$enable_static_tor" = "yes"; then
  68. enable_static_libevent="yes";
  69. enable_static_openssl="yes";
  70. enable_static_zlib="yes";
  71. CFLAGS="$CFLAGS -static"
  72. fi
  73. if test "$enable_system_torrc" = "no"; then
  74. AC_DEFINE(DISABLE_SYSTEM_TORRC, 1,
  75. [Defined if we're not going to look for a torrc in SYSCONF])
  76. fi
  77. if test "$enable_memory_sentinels" = "no"; then
  78. AC_DEFINE(DISABLE_MEMORY_SENTINELS, 1,
  79. [Defined if we're turning off memory safety code to look for bugs])
  80. fi
  81. AM_CONDITIONAL(USE_OPENBSD_MALLOC, test "x$enable_openbsd_malloc" = "xyes")
  82. AC_ARG_ENABLE(asciidoc,
  83. AS_HELP_STRING(--disable-asciidoc, [don't use asciidoc (disables building of manpages)]),
  84. [case "${enableval}" in
  85. "yes") asciidoc=true ;;
  86. "no") asciidoc=false ;;
  87. *) AC_MSG_ERROR(bad value for --disable-asciidoc) ;;
  88. esac], [asciidoc=true])
  89. # systemd notify support
  90. AC_ARG_ENABLE(systemd,
  91. AS_HELP_STRING(--enable-systemd, [enable systemd notification support]),
  92. [case "${enableval}" in
  93. "yes") systemd=true ;;
  94. "no") systemd=false ;;
  95. * ) AC_MSG_ERROR(bad value for --enable-systemd) ;;
  96. esac], [systemd=auto])
  97. if test "$enable_restart_debugging" = "yes"; then
  98. AC_DEFINE(ENABLE_RESTART_DEBUGGING, 1,
  99. [Defined if we're building with support for in-process restart debugging.])
  100. fi
  101. if test "$enable_zstd_advanced_apis" != "no"; then
  102. AC_DEFINE(ENABLE_ZSTD_ADVANCED_APIS, 1,
  103. [Defined if we're going to try to use zstd's "static-only" APIs.])
  104. fi
  105. # systemd support
  106. if test "x$enable_systemd" = "xno"; then
  107. have_systemd=no;
  108. else
  109. PKG_CHECK_MODULES(SYSTEMD,
  110. [libsystemd-daemon],
  111. have_systemd=yes,
  112. have_systemd=no)
  113. if test "x$have_systemd" = "xno"; then
  114. AC_MSG_NOTICE([Okay, checking for systemd a different way...])
  115. PKG_CHECK_MODULES(SYSTEMD,
  116. [libsystemd],
  117. have_systemd=yes,
  118. have_systemd=no)
  119. fi
  120. fi
  121. if test "x$have_systemd" = "xyes"; then
  122. AC_DEFINE(HAVE_SYSTEMD,1,[Have systemd])
  123. TOR_SYSTEMD_CFLAGS="${SYSTEMD_CFLAGS}"
  124. TOR_SYSTEMD_LIBS="${SYSTEMD_LIBS}"
  125. PKG_CHECK_MODULES(LIBSYSTEMD209, [libsystemd >= 209],
  126. [AC_DEFINE(HAVE_SYSTEMD_209,1,[Have systemd v209 or more])], [])
  127. fi
  128. AC_SUBST(TOR_SYSTEMD_CFLAGS)
  129. AC_SUBST(TOR_SYSTEMD_LIBS)
  130. if test "x$enable_systemd" = "xyes" -a "x$have_systemd" != "xyes" ; then
  131. AC_MSG_ERROR([Explicitly requested systemd support, but systemd not found])
  132. fi
  133. case "$host" in
  134. *-*-solaris* )
  135. AC_DEFINE(_REENTRANT, 1, [Define on some platforms to activate x_r() functions in time.h])
  136. ;;
  137. esac
  138. AC_ARG_ENABLE(gcc-warnings,
  139. AS_HELP_STRING(--enable-gcc-warnings, [deprecated alias for enable-fatal-warnings]))
  140. AC_ARG_ENABLE(fatal-warnings,
  141. AS_HELP_STRING(--enable-fatal-warnings, [tell the compiler to treat all warnings as errors.]))
  142. AC_ARG_ENABLE(gcc-warnings-advisory,
  143. AS_HELP_STRING(--disable-gcc-warnings-advisory, [disable the regular verbose warnings]))
  144. dnl Others suggest '/gs /safeseh /nxcompat /dynamicbase' for non-gcc on Windows
  145. AC_ARG_ENABLE(gcc-hardening,
  146. AS_HELP_STRING(--disable-gcc-hardening, [disable compiler security checks]))
  147. dnl Deprecated --enable-expensive-hardening but keep it for now for backward compat.
  148. AC_ARG_ENABLE(expensive-hardening,
  149. AS_HELP_STRING(--enable-expensive-hardening, [enable more fragile and expensive compiler hardening; makes Tor slower]))
  150. AC_ARG_ENABLE(fragile-hardening,
  151. AS_HELP_STRING(--enable-fragile-hardening, [enable more fragile and expensive compiler hardening; makes Tor slower]))
  152. if test "x$enable_expensive_hardening" = "xyes" || test "x$enable_fragile_hardening" = "xyes"; then
  153. fragile_hardening="yes"
  154. AC_DEFINE(DEBUG_SMARTLIST, 1, [Enable smartlist debugging])
  155. fi
  156. dnl Linker hardening options
  157. dnl Currently these options are ELF specific - you can't use this with MacOSX
  158. AC_ARG_ENABLE(linker-hardening,
  159. AS_HELP_STRING(--disable-linker-hardening, [disable linker security fixups]))
  160. AC_ARG_ENABLE(local-appdata,
  161. AS_HELP_STRING(--enable-local-appdata, [default to host local application data paths on Windows]))
  162. if test "$enable_local_appdata" = "yes"; then
  163. AC_DEFINE(ENABLE_LOCAL_APPDATA, 1,
  164. [Defined if we default to host local appdata paths on Windows])
  165. fi
  166. # Tor2web mode flag
  167. AC_ARG_ENABLE(tor2web-mode,
  168. AS_HELP_STRING(--enable-tor2web-mode, [support tor2web non-anonymous mode]),
  169. [if test "x$enableval" = "xyes"; then
  170. CFLAGS="$CFLAGS -D ENABLE_TOR2WEB_MODE=1"
  171. fi])
  172. AC_ARG_ENABLE(tool-name-check,
  173. AS_HELP_STRING(--disable-tool-name-check, [check for sanely named toolchain when cross-compiling]))
  174. AC_ARG_ENABLE(seccomp,
  175. AS_HELP_STRING(--disable-seccomp, [do not attempt to use libseccomp]))
  176. AC_ARG_ENABLE(libscrypt,
  177. AS_HELP_STRING(--disable-libscrypt, [do not attempt to use libscrypt]))
  178. dnl Enable event tracing which are transformed to debug log statement.
  179. AC_ARG_ENABLE(event-tracing-debug,
  180. AS_HELP_STRING(--enable-event-tracing-debug, [build with event tracing to debug log]))
  181. AM_CONDITIONAL([USE_EVENT_TRACING_DEBUG], [test "x$enable_event_tracing_debug" = "xyes"])
  182. if test x$enable_event_tracing_debug = xyes; then
  183. AC_DEFINE([USE_EVENT_TRACING_DEBUG], [1], [Tracing framework to log debug])
  184. AC_DEFINE([TOR_EVENT_TRACING_ENABLED], [1], [Compile the event tracing instrumentation])
  185. fi
  186. dnl Enable Android only features.
  187. AC_ARG_ENABLE(android,
  188. AS_HELP_STRING(--enable-android, [build with Android features enabled]))
  189. AM_CONDITIONAL([USE_ANDROID], [test "x$enable_android" = "xyes"])
  190. if test "x$enable_android" = "xyes"; then
  191. AC_DEFINE([USE_ANDROID], [1], [Compile with Android specific features enabled])
  192. dnl Check if the Android log library is available.
  193. AC_CHECK_HEADERS([android/log.h])
  194. AC_SEARCH_LIBS(__android_log_write, [log])
  195. fi
  196. dnl ---
  197. dnl Tor modules options. These options are namespaced with --disable-module-XXX
  198. dnl ---
  199. dnl All our modules.
  200. m4_define(MODULES, dirauth)
  201. dnl Directory Authority module.
  202. AC_ARG_ENABLE([module-dirauth],
  203. AS_HELP_STRING([--disable-module-dirauth],
  204. [Do not build tor with the dirauth module]),
  205. [], dnl Action if-given
  206. AC_DEFINE([HAVE_MODULE_DIRAUTH], [1],
  207. [Compile with Directory Authority feature support]))
  208. AM_CONDITIONAL(BUILD_MODULE_DIRAUTH, [test "x$enable_module_dirauth" != "xno"])
  209. dnl Helper variables.
  210. TOR_MODULES_ALL_ENABLED=
  211. AC_DEFUN([ADD_MODULE], [
  212. MODULE=m4_toupper($1)
  213. TOR_MODULES_ALL_ENABLED="${TOR_MODULES_ALL_ENABLED} -DHAVE_MODULE_${MODULE}=1"
  214. ])
  215. m4_foreach_w([module], MODULES, [ADD_MODULE([module])])
  216. AC_SUBST(TOR_MODULES_ALL_ENABLED)
  217. dnl check for the correct "ar" when cross-compiling.
  218. dnl (AM_PROG_AR was new in automake 1.11.2, which we do not yet require,
  219. dnl so kludge up a replacement for the case where it isn't there yet.)
  220. m4_ifdef([AM_PROG_AR],
  221. [AM_PROG_AR],
  222. [AN_MAKEVAR([AR], [AC_PROG_AR])
  223. AN_PROGRAM([ar], [AC_PROG_AR])
  224. AC_DEFUN([AC_PROG_AR], [AC_CHECK_TOOL([AR], [ar], [:])])
  225. AC_PROG_AR])
  226. dnl Check whether the above macro has settled for a simply named tool even
  227. dnl though we're cross compiling. We must do this before running AC_PROG_CC,
  228. dnl because that will find any cc on the system, not only the cross-compiler,
  229. dnl and then verify that a binary built with this compiler runs on the
  230. dnl build system. It will then come to the false conclusion that we're not
  231. dnl cross-compiling.
  232. if test "x$enable_tool_name_check" != "xno"; then
  233. if test "x$ac_tool_warned" = "xyes"; then
  234. AC_MSG_ERROR([We are cross compiling but could not find a properly named toolchain. Do you have your cross-compiling toolchain in PATH? (You can --disable-tool-name-check to ignore this.)])
  235. elif test "x$ac_ct_AR" != "x" -a "x$cross_compiling" = "xmaybe"; then
  236. AC_MSG_ERROR([We think we are cross compiling but could not find a properly named toolchain. Do you have your cross-compiling toolchain in PATH? (You can --disable-tool-name-check to ignore this.)])
  237. fi
  238. fi
  239. AC_PROG_CC
  240. AC_PROG_CPP
  241. AC_PROG_MAKE_SET
  242. AC_PROG_RANLIB
  243. AC_PROG_SED
  244. AC_ARG_VAR([PERL], [path to Perl binary])
  245. AC_CHECK_PROGS([PERL], [perl])
  246. AM_CONDITIONAL(USE_PERL, [test "x$ac_cv_prog_PERL" != "x"])
  247. dnl check for asciidoc and a2x
  248. AC_PATH_PROG([ASCIIDOC], [asciidoc], none)
  249. AC_PATH_PROGS([A2X], [a2x a2x.py], none)
  250. AM_CONDITIONAL(USE_ASCIIDOC, test "x$asciidoc" = "xtrue")
  251. AM_PROG_CC_C_O
  252. AC_PROG_CC_C99
  253. AC_ARG_VAR([PYTHON], [path to Python binary])
  254. AC_CHECK_PROGS(PYTHON, [ \
  255. python3 \
  256. python3.8 python3.7 python3.6 python3.5 python3.4 \
  257. python \
  258. python2 python2.7])
  259. if test "x$PYTHON" = "x"; then
  260. AC_MSG_WARN([Python unavailable; some tests will not be run.])
  261. fi
  262. AM_CONDITIONAL(USEPYTHON, [test "x$PYTHON" != "x"])
  263. dnl List all external rust crates we depend on here. Include the version
  264. rust_crates=" \
  265. digest-0.7.2 \
  266. libc-0.2.39 \
  267. "
  268. AC_SUBST(rust_crates)
  269. ifdef([AC_C_FLEXIBLE_ARRAY_MEMBER], [
  270. AC_C_FLEXIBLE_ARRAY_MEMBER
  271. ], [
  272. dnl Maybe we've got an old autoconf...
  273. AC_CACHE_CHECK([for flexible array members],
  274. tor_cv_c_flexarray,
  275. [AC_COMPILE_IFELSE(
  276. AC_LANG_PROGRAM([
  277. struct abc { int a; char b[]; };
  278. ], [
  279. struct abc *def = malloc(sizeof(struct abc)+sizeof(char));
  280. def->b[0] = 33;
  281. ]),
  282. [tor_cv_c_flexarray=yes],
  283. [tor_cv_c_flexarray=no])])
  284. if test "$tor_cv_flexarray" = "yes"; then
  285. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  286. else
  287. AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [1], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
  288. fi
  289. ])
  290. AC_CACHE_CHECK([for working C99 mid-block declaration syntax],
  291. tor_cv_c_c99_decl,
  292. [AC_COMPILE_IFELSE(
  293. [AC_LANG_PROGRAM([], [int x; x = 3; int y; y = 4 + x;])],
  294. [tor_cv_c_c99_decl=yes],
  295. [tor_cv_c_c99_decl=no] )])
  296. if test "$tor_cv_c_c99_decl" != "yes"; then
  297. AC_MSG_ERROR([Your compiler doesn't support c99 mid-block declarations. This is required as of Tor 0.2.6.x])
  298. fi
  299. AC_CACHE_CHECK([for working C99 designated initializers],
  300. tor_cv_c_c99_designated_init,
  301. [AC_COMPILE_IFELSE(
  302. [AC_LANG_PROGRAM([struct s { int a; int b; };],
  303. [[ struct s ss = { .b = 5, .a = 6 }; ]])],
  304. [tor_cv_c_c99_designated_init=yes],
  305. [tor_cv_c_c99_designated_init=no] )])
  306. if test "$tor_cv_c_c99_designated_init" != "yes"; then
  307. AC_MSG_ERROR([Your compiler doesn't support c99 designated initializers. This is required as of Tor 0.2.6.x])
  308. fi
  309. TORUSER=_tor
  310. AC_ARG_WITH(tor-user,
  311. AS_HELP_STRING(--with-tor-user=NAME, [specify username for tor daemon]),
  312. [
  313. TORUSER=$withval
  314. ]
  315. )
  316. AC_SUBST(TORUSER)
  317. TORGROUP=_tor
  318. AC_ARG_WITH(tor-group,
  319. AS_HELP_STRING(--with-tor-group=NAME, [specify group name for tor daemon]),
  320. [
  321. TORGROUP=$withval
  322. ]
  323. )
  324. AC_SUBST(TORGROUP)
  325. dnl If _WIN32 is defined and non-zero, we are building for win32
  326. AC_MSG_CHECKING([for win32])
  327. AC_RUN_IFELSE([AC_LANG_SOURCE([
  328. int main(int c, char **v) {
  329. #ifdef _WIN32
  330. #if _WIN32
  331. return 0;
  332. #else
  333. return 1;
  334. #endif
  335. #else
  336. return 2;
  337. #endif
  338. }])],
  339. bwin32=true; AC_MSG_RESULT([yes]),
  340. bwin32=false; AC_MSG_RESULT([no]),
  341. bwin32=cross; AC_MSG_RESULT([cross])
  342. )
  343. if test "$bwin32" = "cross"; then
  344. AC_MSG_CHECKING([for win32 (cross)])
  345. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  346. #ifdef _WIN32
  347. int main(int c, char **v) {return 0;}
  348. #else
  349. #error
  350. int main(int c, char **v) {return x(y);}
  351. #endif
  352. ])],
  353. bwin32=true; AC_MSG_RESULT([yes]),
  354. bwin32=false; AC_MSG_RESULT([no]))
  355. fi
  356. AH_BOTTOM([
  357. #ifdef _WIN32
  358. /* Defined to access windows functions and definitions for >=WinXP */
  359. # ifndef WINVER
  360. # define WINVER 0x0501
  361. # endif
  362. /* Defined to access _other_ windows functions and definitions for >=WinXP */
  363. # ifndef _WIN32_WINNT
  364. # define _WIN32_WINNT 0x0501
  365. # endif
  366. /* Defined to avoid including some windows headers as part of Windows.h */
  367. # ifndef WIN32_LEAN_AND_MEAN
  368. # define WIN32_LEAN_AND_MEAN 1
  369. # endif
  370. #endif
  371. ])
  372. AM_CONDITIONAL(BUILD_NT_SERVICES, test "x$bwin32" = "xtrue")
  373. AM_CONDITIONAL(BUILD_LIBTORRUNNER, test "x$bwin32" != "xtrue")
  374. dnl Enable C99 when compiling with MIPSpro
  375. AC_MSG_CHECKING([for MIPSpro compiler])
  376. AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [
  377. #if (defined(__sgi) && defined(_COMPILER_VERSION))
  378. #error
  379. return x(y);
  380. #endif
  381. ])],
  382. bmipspro=false; AC_MSG_RESULT(no),
  383. bmipspro=true; AC_MSG_RESULT(yes))
  384. if test "$bmipspro" = "true"; then
  385. CFLAGS="$CFLAGS -c99"
  386. fi
  387. AC_C_BIGENDIAN
  388. AC_ARG_VAR([TOR_RUST_TARGET], [Rust target, must be specified when cross-compiling (HOST != BUILD). example: i686-pc-windows-gnu])
  389. if test "x$enable_rust" = "xyes"; then
  390. AC_ARG_VAR([RUSTC], [path to the rustc binary])
  391. AC_CHECK_PROG([RUSTC], [rustc], [rustc],[no])
  392. if test "x$RUSTC" = "xno"; then
  393. AC_MSG_ERROR([rustc unavailable but rust integration requested.])
  394. fi
  395. AC_ARG_VAR([CARGO], [path to the cargo binary])
  396. AC_CHECK_PROG([CARGO], [cargo], [cargo],[no])
  397. if test "x$CARGO" = "xno"; then
  398. AC_MSG_ERROR([cargo unavailable but rust integration requested.])
  399. fi
  400. AC_DEFINE([HAVE_RUST], 1, [have Rust])
  401. if test "x$enable_fatal_warnings" = "xyes"; then
  402. RUST_WARN=
  403. else
  404. RUST_WARN=#
  405. fi
  406. if test "x$enable_cargo_online_mode" = "xyes"; then
  407. CARGO_ONLINE=
  408. RUST_DL=#
  409. else
  410. CARGO_ONLINE=--frozen
  411. RUST_DL=
  412. dnl When we're not allowed to touch the network, we need crate dependencies
  413. dnl locally available.
  414. AC_MSG_CHECKING([rust crate dependencies])
  415. AC_ARG_VAR([TOR_RUST_DEPENDENCIES], [path to directory with local crate mirror])
  416. if test "x$TOR_RUST_DEPENDENCIES" = "x"; then
  417. TOR_RUST_DEPENDENCIES="${srcdir}/src/ext/rust/crates"
  418. fi
  419. dnl Check whether the path exists before we try to cd into it.
  420. if test ! -d "$TOR_RUST_DEPENDENCIES"; then
  421. AC_MSG_ERROR([Rust dependency directory $TOR_RUST_DEPENDENCIES does not exist. Specify a dependency directory using the TOR_RUST_DEPENDENCIES variable or allow cargo to fetch crates using --enable-cargo-online-mode.])
  422. ERRORED=1
  423. fi
  424. dnl Make the path absolute, since we'll be using it from within a
  425. dnl subdirectory.
  426. TOR_RUST_DEPENDENCIES=$(cd "$TOR_RUST_DEPENDENCIES" ; pwd)
  427. for dep in $rust_crates; do
  428. if test ! -d "$TOR_RUST_DEPENDENCIES"/"$dep"; then
  429. AC_MSG_ERROR([Failure to find rust dependency $TOR_RUST_DEPENDENCIES/$dep. Specify a dependency directory using the TOR_RUST_DEPENDENCIES variable or allow cargo to fetch crates using --enable-cargo-online-mode.])
  430. ERRORED=1
  431. fi
  432. done
  433. if test "x$ERRORED" = "x"; then
  434. AC_MSG_RESULT([yes])
  435. fi
  436. fi
  437. dnl This is a workaround for #46797
  438. dnl (a.k.a https://github.com/rust-lang/rust/issues/46797 ). Once the
  439. dnl upstream bug is fixed, we can remove this workaround.
  440. case "$host_os" in
  441. darwin*)
  442. TOR_RUST_EXTRA_LIBS="-lresolv"
  443. ;;
  444. esac
  445. dnl For now both MSVC and MinGW rust libraries will output static libs with
  446. dnl the MSVC naming convention.
  447. if test "$bwin32" = "true"; then
  448. tor_rust_static_name=tor_rust.lib
  449. else
  450. tor_rust_static_name=libtor_rust.a
  451. fi
  452. AC_CANONICAL_BUILD
  453. if test -n "$TOR_RUST_TARGET"; then
  454. if test "$host" = "$build"; then
  455. AC_MSG_ERROR([HOST = BUILD is invalid if TOR_RUST_TARGET is specified, see configure --help for more information.])
  456. fi
  457. RUST_TARGET_PROP="target = '$TOR_RUST_TARGET'"
  458. TOR_RUST_LIB_PATH="src/rust/target/$TOR_RUST_TARGET/release/$tor_rust_static_name"
  459. else
  460. if test "$host" != "$build"; then
  461. AC_MSG_ERROR([TOR_RUST_TARGET must be specified when cross-compiling with Rust enabled.])
  462. fi
  463. RUST_TARGET_PROP=
  464. TOR_RUST_LIB_PATH="src/rust/target/release/$tor_rust_static_name"
  465. fi
  466. AC_SUBST(RUST_TARGET_PROP)
  467. AC_SUBST(TOR_RUST_LIB_PATH)
  468. AC_SUBST(CARGO_ONLINE)
  469. AC_SUBST(RUST_WARN)
  470. AC_SUBST(RUST_DL)
  471. dnl Let's check the rustc version, too
  472. AC_MSG_CHECKING([rust version])
  473. RUSTC_VERSION=`$RUSTC --version`
  474. RUSTC_VERSION_MAJOR=`$RUSTC --version | cut -d ' ' -f 2 | cut -d '.' -f 1`
  475. RUSTC_VERSION_MINOR=`$RUSTC --version | cut -d ' ' -f 2 | cut -d '.' -f 2`
  476. if test "x$RUSTC_VERSION_MAJOR" = "x" -o "x$RUSTC_VERSION_MINOR" = "x"; then
  477. AC_MSG_ERROR([rustc version couldn't be identified])
  478. fi
  479. if test "$RUSTC_VERSION_MAJOR" -lt 2 -a "$RUSTC_VERSION_MINOR" -lt 14; then
  480. AC_MSG_ERROR([rustc must be at least version 1.14])
  481. fi
  482. AC_MSG_RESULT([$RUSTC_VERSION])
  483. fi
  484. AC_SUBST(TOR_RUST_EXTRA_LIBS)
  485. AC_SEARCH_LIBS(socket, [socket network])
  486. AC_SEARCH_LIBS(gethostbyname, [nsl])
  487. AC_SEARCH_LIBS(dlopen, [dl])
  488. AC_SEARCH_LIBS(inet_aton, [resolv])
  489. AC_SEARCH_LIBS(backtrace, [execinfo])
  490. saved_LIBS="$LIBS"
  491. AC_SEARCH_LIBS([clock_gettime], [rt])
  492. if test "$LIBS" != "$saved_LIBS"; then
  493. # Looks like we need -lrt for clock_gettime().
  494. have_rt=yes
  495. fi
  496. AC_SEARCH_LIBS(pthread_create, [pthread])
  497. AC_SEARCH_LIBS(pthread_detach, [pthread])
  498. AM_CONDITIONAL(THREADS_WIN32, test "$bwin32" = "true")
  499. AM_CONDITIONAL(THREADS_PTHREADS, test "$bwin32" = "false")
  500. AC_CHECK_FUNCS(
  501. _NSGetEnviron \
  502. RtlSecureZeroMemory \
  503. SecureZeroMemory \
  504. accept4 \
  505. backtrace \
  506. backtrace_symbols_fd \
  507. eventfd \
  508. explicit_bzero \
  509. timingsafe_memcmp \
  510. flock \
  511. ftime \
  512. get_current_dir_name \
  513. getaddrinfo \
  514. getifaddrs \
  515. getpass \
  516. getrlimit \
  517. gettimeofday \
  518. gmtime_r \
  519. gnu_get_libc_version \
  520. htonll \
  521. inet_aton \
  522. ioctl \
  523. issetugid \
  524. llround \
  525. localtime_r \
  526. lround \
  527. memmem \
  528. memset_s \
  529. mmap \
  530. pipe \
  531. pipe2 \
  532. prctl \
  533. readpassphrase \
  534. rint \
  535. sigaction \
  536. socketpair \
  537. statvfs \
  538. strlcat \
  539. strlcpy \
  540. strnlen \
  541. strptime \
  542. strtok_r \
  543. strtoull \
  544. sysconf \
  545. sysctl \
  546. truncate \
  547. uname \
  548. usleep \
  549. vasprintf \
  550. _vscprintf
  551. )
  552. # Apple messed up when they added some functions: they
  553. # forgot to decorate them with appropriate AVAILABLE_MAC_OS_VERSION
  554. # checks.
  555. # We should only probe for these functions if we are sure that we
  556. # are not targeting OS X 10.9 or earlier.
  557. AC_MSG_CHECKING([for a pre-Yosemite OS X build target])
  558. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  559. #ifdef __APPLE__
  560. # include <AvailabilityMacros.h>
  561. # ifndef MAC_OS_X_VERSION_10_10
  562. # define MAC_OS_X_VERSION_10_10 101000
  563. # endif
  564. # if defined(MAC_OS_X_VERSION_MIN_REQUIRED)
  565. # if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_10
  566. # error "Running on Mac OS X 10.9 or earlier"
  567. # endif
  568. # endif
  569. #endif
  570. ]], [[]])],
  571. [on_macos_pre_10_10=no ; AC_MSG_RESULT([no])],
  572. [on_macos_pre_10_10=yes; AC_MSG_RESULT([yes])])
  573. if test "$on_macos_pre_10_10" = "no"; then
  574. AC_CHECK_FUNCS(
  575. mach_approximate_time \
  576. )
  577. fi
  578. # We should only probe for these functions if we are sure that we
  579. # are not targeting OSX 10.11 or earlier.
  580. AC_MSG_CHECKING([for a pre-Sierra OSX build target])
  581. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  582. #ifdef __APPLE__
  583. # include <AvailabilityMacros.h>
  584. # ifndef MAC_OS_X_VERSION_10_12
  585. # define MAC_OS_X_VERSION_10_12 101200
  586. # endif
  587. # if defined(MAC_OS_X_VERSION_MIN_REQUIRED)
  588. # if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_12
  589. # error "Running on Mac OSX 10.11 or earlier"
  590. # endif
  591. # endif
  592. #endif
  593. ]], [[]])],
  594. [on_macos_pre_10_12=no ; AC_MSG_RESULT([no])],
  595. [on_macos_pre_10_12=yes; AC_MSG_RESULT([yes])])
  596. if test "$on_macos_pre_10_12" = "no"; then
  597. AC_CHECK_FUNCS(
  598. clock_gettime \
  599. getentropy \
  600. )
  601. fi
  602. if test "$bwin32" != "true"; then
  603. AC_CHECK_HEADERS(pthread.h)
  604. AC_CHECK_FUNCS(pthread_create)
  605. AC_CHECK_FUNCS(pthread_condattr_setclock)
  606. fi
  607. if test "$bwin32" = "true"; then
  608. AC_CHECK_DECLS([SecureZeroMemory, _getwch], , , [
  609. #include <windows.h>
  610. #include <conio.h>
  611. #include <wchar.h>
  612. ])
  613. fi
  614. AM_CONDITIONAL(BUILD_READPASSPHRASE_C,
  615. test "x$ac_cv_func_readpassphrase" = "xno" && test "$bwin32" = "false")
  616. AC_MSG_CHECKING([whether free(NULL) works])
  617. AC_RUN_IFELSE([AC_LANG_PROGRAM([
  618. #include <stdlib.h>
  619. ], [
  620. char *p = NULL;
  621. free(p);
  622. ])],
  623. [free_null_ok=true; AC_MSG_RESULT(yes)],
  624. [free_null_ok=false; AC_MSG_RESULT(no)],
  625. [free_null_ok=cross; AC_MSG_RESULT(cross)])
  626. if test "$free_null_ok" = "false"; then
  627. AC_MSG_ERROR([Your libc implementation doesn't allow free(NULL), as required by C99.])
  628. fi
  629. dnl ------------------------------------------------------
  630. dnl Where do you live, libevent? And how do we call you?
  631. if test "$bwin32" = "true"; then
  632. TOR_LIB_WS32=-lws2_32
  633. TOR_LIB_IPHLPAPI=-liphlpapi
  634. # Some of the cargo-cults recommend -lwsock32 as well, but I don't
  635. # think it's actually necessary.
  636. TOR_LIB_GDI=-lgdi32
  637. TOR_LIB_USERENV=-luserenv
  638. else
  639. TOR_LIB_WS32=
  640. TOR_LIB_GDI=
  641. TOR_LIB_USERENV=
  642. fi
  643. AC_SUBST(TOR_LIB_WS32)
  644. AC_SUBST(TOR_LIB_GDI)
  645. AC_SUBST(TOR_LIB_IPHLPAPI)
  646. AC_SUBST(TOR_LIB_USERENV)
  647. tor_libevent_pkg_redhat="libevent"
  648. tor_libevent_pkg_debian="libevent-dev"
  649. tor_libevent_devpkg_redhat="libevent-devel"
  650. tor_libevent_devpkg_debian="libevent-dev"
  651. dnl On Gnu/Linux or any place we require it, we'll add librt to the Libevent
  652. dnl linking for static builds.
  653. STATIC_LIBEVENT_FLAGS=""
  654. if test "$enable_static_libevent" = "yes"; then
  655. if test "$have_rt" = "yes"; then
  656. STATIC_LIBEVENT_FLAGS=" -lrt "
  657. fi
  658. fi
  659. TOR_SEARCH_LIBRARY(libevent, $trylibeventdir, [-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32], [
  660. #ifdef _WIN32
  661. #include <winsock2.h>
  662. #endif
  663. #include <sys/time.h>
  664. #include <sys/types.h>
  665. #include <event2/event.h>], [
  666. #ifdef _WIN32
  667. #include <winsock2.h>
  668. #endif
  669. struct event_base;
  670. struct event_base *event_base_new(void);
  671. void event_base_free(struct event_base *);],
  672. [
  673. #ifdef _WIN32
  674. {WSADATA d; WSAStartup(0x101,&d); }
  675. #endif
  676. event_base_free(event_base_new());
  677. ], [--with-libevent-dir], [/opt/libevent])
  678. dnl Determine the incantation needed to link libevent.
  679. save_LIBS="$LIBS"
  680. save_LDFLAGS="$LDFLAGS"
  681. save_CPPFLAGS="$CPPFLAGS"
  682. LIBS="$STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32 $save_LIBS"
  683. LDFLAGS="$TOR_LDFLAGS_libevent $LDFLAGS"
  684. CPPFLAGS="$TOR_CPPFLAGS_libevent $CPPFLAGS"
  685. AC_CHECK_HEADERS(event2/event.h event2/dns.h event2/bufferevent_ssl.h)
  686. if test "$enable_static_libevent" = "yes"; then
  687. if test "$tor_cv_library_libevent_dir" = "(system)"; then
  688. AC_MSG_ERROR("You must specify an explicit --with-libevent-dir=x option when using --enable-static-libevent")
  689. else
  690. TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent.a $STATIC_LIBEVENT_FLAGS"
  691. fi
  692. else
  693. if test "x$ac_cv_header_event2_event_h" = "xyes"; then
  694. AC_SEARCH_LIBS(event_new, [event event_core], , AC_MSG_ERROR("libevent2 is installed but linking it failed while searching for event_new"))
  695. AC_SEARCH_LIBS(evdns_base_new, [event event_extra], , AC_MSG_ERROR("libevent2 is installed but linking it failed while searching for evdns_base_new"))
  696. if test "$ac_cv_search_event_new" != "none required"; then
  697. TOR_LIBEVENT_LIBS="$ac_cv_search_event_new"
  698. fi
  699. if test "$ac_cv_search_evdns_base_new" != "none required"; then
  700. TOR_LIBEVENT_LIBS="$ac_cv_search_evdns_base_new $TOR_LIBEVENT_LIBS"
  701. fi
  702. else
  703. AC_MSG_ERROR("libevent2 is required but the headers could not be found")
  704. fi
  705. fi
  706. dnl Now check for particular libevent functions.
  707. AC_CHECK_FUNCS([evutil_secure_rng_set_urandom_device_file \
  708. evutil_secure_rng_add_bytes \
  709. ])
  710. LIBS="$save_LIBS"
  711. LDFLAGS="$save_LDFLAGS"
  712. CPPFLAGS="$save_CPPFLAGS"
  713. dnl Check that libevent is at least at version 2.0.10, the first stable
  714. dnl release of its series
  715. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent"
  716. AC_MSG_CHECKING([whether Libevent is new enough])
  717. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  718. #include <event2/event.h>
  719. #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 0x02000a00
  720. #error
  721. int x = y(zz);
  722. #else
  723. int x = 1;
  724. #endif
  725. ])], [ AC_MSG_RESULT([yes]) ],
  726. [ AC_MSG_RESULT([no])
  727. AC_MSG_ERROR([Libevent is not new enough. We require 2.0.10-stable or later]) ] )
  728. LIBS="$save_LIBS"
  729. LDFLAGS="$save_LDFLAGS"
  730. CPPFLAGS="$save_CPPFLAGS"
  731. AC_SUBST(TOR_LIBEVENT_LIBS)
  732. dnl ------------------------------------------------------
  733. dnl Where do you live, libm?
  734. dnl On some platforms (Haiku/BeOS) the math library is
  735. dnl part of libroot. In which case don't link against lm
  736. TOR_LIB_MATH=""
  737. save_LIBS="$LIBS"
  738. AC_SEARCH_LIBS(pow, [m], , AC_MSG_ERROR([Could not find pow in libm or libc.]))
  739. if test "$ac_cv_search_pow" != "none required"; then
  740. TOR_LIB_MATH="$ac_cv_search_pow"
  741. fi
  742. LIBS="$save_LIBS"
  743. AC_SUBST(TOR_LIB_MATH)
  744. dnl ------------------------------------------------------
  745. dnl Where do you live, openssl? And how do we call you?
  746. tor_openssl_pkg_redhat="openssl"
  747. tor_openssl_pkg_debian="libssl-dev"
  748. tor_openssl_devpkg_redhat="openssl-devel"
  749. tor_openssl_devpkg_debian="libssl-dev"
  750. ALT_openssl_WITHVAL=""
  751. AC_ARG_WITH(ssl-dir,
  752. AS_HELP_STRING(--with-ssl-dir=PATH, [obsolete alias for --with-openssl-dir]),
  753. [
  754. if test "x$withval" != "xno" && test "x$withval" != "x"; then
  755. ALT_openssl_WITHVAL="$withval"
  756. fi
  757. ])
  758. AC_MSG_NOTICE([Now, we'll look for OpenSSL >= 1.0.1])
  759. TOR_SEARCH_LIBRARY(openssl, $tryssldir, [-lssl -lcrypto $TOR_LIB_GDI $TOR_LIB_WS32],
  760. [#include <openssl/ssl.h>
  761. char *getenv(const char *);],
  762. [struct ssl_cipher_st;
  763. unsigned SSL_CIPHER_get_id(const struct ssl_cipher_st *);
  764. char *getenv(const char *);],
  765. dnl This funny-looking test program calls getenv, so that the compiler
  766. dnl will neither make code that call SSL_CIPHER_get_id(NULL) [producing
  767. dnl a crash], nor optimize out the call to SSL_CIPHER_get_id().
  768. dnl We look for SSL_cipher_get_id() because it is present in
  769. dnl OpenSSL >=1.0.1, because it is not deprecated, and because Tor
  770. dnl depends on it.
  771. [if (getenv("THIS_SHOULDNT_BE_SET_X201803")) SSL_CIPHER_get_id((void *)0);], [],
  772. [/usr/local/opt/openssl /usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /opt/openssl])
  773. dnl XXXX check for OPENSSL_VERSION_NUMBER == SSLeay()
  774. if test "$enable_static_openssl" = "yes"; then
  775. if test "$tor_cv_library_openssl_dir" = "(system)"; then
  776. AC_MSG_ERROR("You must specify an explicit --with-openssl-dir=x option when using --enable-static-openssl")
  777. else
  778. TOR_OPENSSL_LIBS="$TOR_LIBDIR_openssl/libssl.a $TOR_LIBDIR_openssl/libcrypto.a"
  779. fi
  780. else
  781. TOR_OPENSSL_LIBS="-lssl -lcrypto"
  782. fi
  783. AC_SUBST(TOR_OPENSSL_LIBS)
  784. dnl Now check for particular openssl functions.
  785. save_LIBS="$LIBS"
  786. save_LDFLAGS="$LDFLAGS"
  787. save_CPPFLAGS="$CPPFLAGS"
  788. LIBS="$TOR_OPENSSL_LIBS $LIBS"
  789. LDFLAGS="$TOR_LDFLAGS_openssl $LDFLAGS"
  790. CPPFLAGS="$TOR_CPPFLAGS_openssl $CPPFLAGS"
  791. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  792. #include <openssl/opensslv.h>
  793. #if !defined(LIBRESSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER < 0x1000100fL
  794. #error "too old"
  795. #endif
  796. ]], [[]])],
  797. [ : ],
  798. [ AC_MSG_ERROR([OpenSSL is too old. We require 1.0.1 or later. You can specify a path to a newer one with --with-openssl-dir.]) ])
  799. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  800. #include <openssl/opensslv.h>
  801. #include <openssl/evp.h>
  802. #if defined(OPENSSL_NO_EC) || defined(OPENSSL_NO_ECDH) || defined(OPENSSL_NO_ECDSA)
  803. #error "no ECC"
  804. #endif
  805. #if !defined(NID_X9_62_prime256v1) || !defined(NID_secp224r1)
  806. #error "curves unavailable"
  807. #endif
  808. ]], [[]])],
  809. [ : ],
  810. [ AC_MSG_ERROR([OpenSSL is built without full ECC support, including curves P256 and P224. You can specify a path to one with ECC support with --with-openssl-dir.]) ])
  811. AC_CHECK_MEMBERS([struct ssl_method_st.get_cipher_by_char], , ,
  812. [#include <openssl/ssl.h>
  813. ])
  814. AC_CHECK_FUNCS([ \
  815. SSL_SESSION_get_master_key \
  816. SSL_get_server_random \
  817. SSL_get_client_ciphers \
  818. SSL_get_client_random \
  819. SSL_CIPHER_find \
  820. TLS_method
  821. ])
  822. dnl Check if OpenSSL has scrypt implementation.
  823. AC_CHECK_FUNCS([ EVP_PBE_scrypt ])
  824. dnl Check if OpenSSL structures are opaque
  825. AC_CHECK_MEMBERS([SSL.state], , ,
  826. [#include <openssl/ssl.h>
  827. ])
  828. AC_CHECK_SIZEOF(SHA_CTX, , [AC_INCLUDES_DEFAULT()
  829. #include <openssl/sha.h>
  830. ])
  831. dnl Define the set of checks for KIST scheduler support.
  832. AC_DEFUN([CHECK_KIST_SUPPORT],[
  833. dnl KIST needs struct tcp_info and for certain members to exist.
  834. AC_CHECK_MEMBERS(
  835. [struct tcp_info.tcpi_unacked, struct tcp_info.tcpi_snd_mss],
  836. , ,[[#include <netinet/tcp.h>]])
  837. dnl KIST needs SIOCOUTQNSD to exist for an ioctl call.
  838. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  839. #include <linux/sockios.h>
  840. #ifndef SIOCOUTQNSD
  841. #error
  842. #endif
  843. ])], have_siocoutqnsd=yes, have_siocoutqnsd=no)
  844. if test "x$have_siocoutqnsd" = "xyes"; then
  845. if test "x$ac_cv_member_struct_tcp_info_tcpi_unacked" = "xyes"; then
  846. if test "x$ac_cv_member_struct_tcp_info_tcpi_snd_mss" = "xyes"; then
  847. have_kist_support=yes
  848. fi
  849. fi
  850. fi
  851. ])
  852. dnl Now, trigger the check.
  853. CHECK_KIST_SUPPORT
  854. AS_IF([test "x$have_kist_support" = "xyes"],
  855. [AC_DEFINE(HAVE_KIST_SUPPORT, 1, [Defined if KIST scheduler is supported
  856. on this system])],
  857. [AC_MSG_NOTICE([KIST scheduler can't be used. Missing support.])])
  858. LIBS="$save_LIBS"
  859. LDFLAGS="$save_LDFLAGS"
  860. CPPFLAGS="$save_CPPFLAGS"
  861. dnl ------------------------------------------------------
  862. dnl Where do you live, zlib? And how do we call you?
  863. tor_zlib_pkg_redhat="zlib"
  864. tor_zlib_pkg_debian="zlib1g"
  865. tor_zlib_devpkg_redhat="zlib-devel"
  866. tor_zlib_devpkg_debian="zlib1g-dev"
  867. TOR_SEARCH_LIBRARY(zlib, $tryzlibdir, [-lz],
  868. [#include <zlib.h>],
  869. [const char * zlibVersion(void);],
  870. [zlibVersion();], [--with-zlib-dir],
  871. [/opt/zlib])
  872. if test "$enable_static_zlib" = "yes"; then
  873. if test "$tor_cv_library_zlib_dir" = "(system)"; then
  874. AC_MSG_ERROR("You must specify an explicit --with-zlib-dir=x option when
  875. using --enable-static-zlib")
  876. else
  877. TOR_ZLIB_LIBS="$TOR_LIBDIR_zlib/libz.a"
  878. fi
  879. else
  880. TOR_ZLIB_LIBS="-lz"
  881. fi
  882. AC_SUBST(TOR_ZLIB_LIBS)
  883. dnl ------------------------------------------------------
  884. dnl Where we do we find lzma?
  885. AC_ARG_ENABLE(lzma,
  886. AS_HELP_STRING(--enable-lzma, [enable support for the LZMA compression scheme.]),
  887. [case "${enableval}" in
  888. "yes") lzma=true ;;
  889. "no") lzma=false ;;
  890. * ) AC_MSG_ERROR(bad value for --enable-lzma) ;;
  891. esac], [lzma=auto])
  892. if test "x$enable_lzma" = "xno"; then
  893. have_lzma=no;
  894. else
  895. PKG_CHECK_MODULES([LZMA],
  896. [liblzma],
  897. have_lzma=yes,
  898. have_lzma=no)
  899. if test "x$have_lzma" = "xno" ; then
  900. AC_MSG_WARN([Unable to find liblzma.])
  901. fi
  902. fi
  903. if test "x$have_lzma" = "xyes"; then
  904. AC_DEFINE(HAVE_LZMA,1,[Have LZMA])
  905. TOR_LZMA_CFLAGS="${LZMA_CFLAGS}"
  906. TOR_LZMA_LIBS="${LZMA_LIBS}"
  907. fi
  908. AC_SUBST(TOR_LZMA_CFLAGS)
  909. AC_SUBST(TOR_LZMA_LIBS)
  910. dnl ------------------------------------------------------
  911. dnl Where we do we find zstd?
  912. AC_ARG_ENABLE(zstd,
  913. AS_HELP_STRING(--enable-zstd, [enable support for the Zstandard compression scheme.]),
  914. [case "${enableval}" in
  915. "yes") zstd=true ;;
  916. "no") zstd=false ;;
  917. * ) AC_MSG_ERROR(bad value for --enable-zstd) ;;
  918. esac], [zstd=auto])
  919. if test "x$enable_zstd" = "xno"; then
  920. have_zstd=no;
  921. else
  922. PKG_CHECK_MODULES([ZSTD],
  923. [libzstd >= 1.1],
  924. have_zstd=yes,
  925. have_zstd=no)
  926. if test "x$have_zstd" = "xno" ; then
  927. AC_MSG_WARN([Unable to find libzstd.])
  928. fi
  929. fi
  930. if test "x$have_zstd" = "xyes"; then
  931. AC_DEFINE(HAVE_ZSTD,1,[Have Zstd])
  932. TOR_ZSTD_CFLAGS="${ZSTD_CFLAGS}"
  933. TOR_ZSTD_LIBS="${ZSTD_LIBS}"
  934. dnl now check for zstd functions
  935. save_LIBS="$LIBS"
  936. save_CFLAGS="$CFLAGS"
  937. LIBS="$LIBS $ZSTD_LIBS"
  938. CFLAGS="$CFLAGS $ZSTD_CFLAGS"
  939. AC_CHECK_FUNCS(ZSTD_estimateCStreamSize \
  940. ZSTD_estimateDCtxSize)
  941. LIBS="$save_LIBS"
  942. CFLAGS="$save_CFLAGS"
  943. fi
  944. AC_SUBST(TOR_ZSTD_CFLAGS)
  945. AC_SUBST(TOR_ZSTD_LIBS)
  946. dnl ----------------------------------------------------------------------
  947. dnl Check if libcap is available for capabilities.
  948. tor_cap_pkg_debian="libcap2"
  949. tor_cap_pkg_redhat="libcap"
  950. tor_cap_devpkg_debian="libcap-dev"
  951. tor_cap_devpkg_redhat="libcap-devel"
  952. AC_CHECK_LIB([cap], [cap_init], [],
  953. AC_MSG_NOTICE([Libcap was not found. Capabilities will not be usable.])
  954. )
  955. AC_CHECK_FUNCS(cap_set_proc)
  956. dnl ---------------------------------------------------------------------
  957. dnl Now that we know about our major libraries, we can check for compiler
  958. dnl and linker hardening options. We need to do this with the libraries known,
  959. dnl since sometimes the linker will like an option but not be willing to
  960. dnl use it with a build of a library.
  961. all_ldflags_for_check="$TOR_LDFLAGS_zlib $TOR_LDFLAGS_openssl $TOR_LDFLAGS_libevent"
  962. all_libs_for_check="$TOR_ZLIB_LIBS $TOR_LIB_MATH $TOR_LIBEVENT_LIBS $TOR_OPENSSL_LIBS $TOR_SYSTEMD_LIBS $TOR_LIB_WS32 $TOR_LIB_GDI $TOR_LIB_USERENV $TOR_CAP_LIBS"
  963. CFLAGS_FTRAPV=
  964. CFLAGS_FWRAPV=
  965. CFLAGS_ASAN=
  966. CFLAGS_UBSAN=
  967. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
  968. #if !defined(__clang__)
  969. #error
  970. #endif])], have_clang=yes, have_clang=no)
  971. if test "x$enable_gcc_hardening" != "xno"; then
  972. CFLAGS="$CFLAGS -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2"
  973. if test "x$have_clang" = "xyes"; then
  974. TOR_CHECK_CFLAGS(-Qunused-arguments)
  975. fi
  976. TOR_CHECK_CFLAGS(-fstack-protector-all, also_link)
  977. AS_VAR_PUSHDEF([can_compile], [tor_cv_cflags_-fstack-protector-all])
  978. AS_VAR_PUSHDEF([can_link], [tor_can_link_-fstack-protector-all])
  979. m4_ifdef([AS_VAR_IF],[
  980. AS_VAR_IF(can_compile, [yes],
  981. AS_VAR_IF(can_link, [yes],
  982. [],
  983. AC_MSG_ERROR([We tried to build with stack protection; it looks like your compiler supports it but your libc does not provide it. Are you missing libssp? (You can --disable-gcc-hardening to ignore this error.)]))
  984. )])
  985. AS_VAR_POPDEF([can_link])
  986. AS_VAR_POPDEF([can_compile])
  987. TOR_CHECK_CFLAGS(-Wstack-protector)
  988. TOR_CHECK_CFLAGS(--param ssp-buffer-size=1)
  989. if test "$bwin32" = "false" && test "$enable_libfuzzer" != "yes" && test "$enable_oss_fuzz" != "yes"; then
  990. TOR_CHECK_CFLAGS(-fPIE)
  991. TOR_CHECK_LDFLAGS(-pie, "$all_ldflags_for_check", "$all_libs_for_check")
  992. fi
  993. TOR_TRY_COMPILE_WITH_CFLAGS(-fwrapv, also_link, CFLAGS_FWRAPV="-fwrapv", true)
  994. fi
  995. if test "$fragile_hardening" = "yes"; then
  996. TOR_TRY_COMPILE_WITH_CFLAGS(-ftrapv, also_link, CFLAGS_FTRAPV="-ftrapv", true)
  997. if test "$tor_cv_cflags__ftrapv" = "yes" && test "$tor_can_link__ftrapv" != "yes"; then
  998. AC_MSG_WARN([The compiler supports -ftrapv, but for some reason I was not able to link with -ftrapv. Are you missing run-time support? Run-time hardening will not work as well as it should.])
  999. fi
  1000. if test "$tor_cv_cflags__ftrapv" != "yes"; then
  1001. AC_MSG_ERROR([You requested fragile hardening, but the compiler does not seem to support -ftrapv.])
  1002. fi
  1003. TOR_TRY_COMPILE_WITH_CFLAGS([-fsanitize=address], also_link, CFLAGS_ASAN="-fsanitize=address", true)
  1004. if test "$tor_cv_cflags__fsanitize_address" = "yes" && test "$tor_can_link__fsanitize_address" != "yes"; then
  1005. AC_MSG_ERROR([The compiler supports -fsanitize=address, but for some reason I was not able to link when using it. Are you missing run-time support? With GCC you need libubsan.*, and with Clang you need libclang_rt.ubsan*])
  1006. fi
  1007. TOR_TRY_COMPILE_WITH_CFLAGS([-fsanitize=undefined], also_link, CFLAGS_UBSAN="-fsanitize=undefined", true)
  1008. if test "$tor_cv_cflags__fsanitize_address" = "yes" && test "$tor_can_link__fsanitize_address" != "yes"; then
  1009. AC_MSG_ERROR([The compiler supports -fsanitize=undefined, but for some reason I was not able to link when using it. Are you missing run-time support? With GCC you need libasan.*, and with Clang you need libclang_rt.ubsan*])
  1010. fi
  1011. TOR_CHECK_CFLAGS([-fno-omit-frame-pointer])
  1012. fi
  1013. dnl Find the correct libraries to add in order to use the sanitizers.
  1014. dnl
  1015. dnl When building Rust, Cargo will run the linker with the -nodefaultlibs
  1016. dnl option, which will prevent the compiler from linking the sanitizer
  1017. dnl libraries it needs. We need to specify them manually.
  1018. dnl
  1019. dnl What's more, we need to specify them in a linker script rather than
  1020. dnl from build.rs: these options aren't allowed in the cargo:rustc-flags
  1021. dnl variable.
  1022. RUST_LINKER_OPTIONS=""
  1023. if test "x$have_clang" = "xyes"; then
  1024. if test "x$CFLAGS_ASAN" != "x"; then
  1025. RUST_LINKER_OPTIONS="$RUST_LINKER_OPTIONS $CFLAGS_ASAN"
  1026. fi
  1027. if test "x$CFLAGS_UBSAN" != "x"; then
  1028. RUST_LINKER_OPTIONS="$RUST_LINKER_OPTIONS $CFLAGS_UBSAN"
  1029. fi
  1030. else
  1031. if test "x$CFLAGS_ASAN" != "x"; then
  1032. RUST_LINKER_OPTIONS="$RUST_LINKER_OPTIONS -lasan"
  1033. fi
  1034. if test "x$CFLAGS_UBSAN" != "x"; then
  1035. RUST_LINKER_OPTIONS="$RUST_LINKER_OPTIONS -lubsan"
  1036. fi
  1037. fi
  1038. AC_SUBST(RUST_LINKER_OPTIONS)
  1039. CFLAGS_BUGTRAP="$CFLAGS_FTRAPV $CFLAGS_ASAN $CFLAGS_UBSAN"
  1040. CFLAGS_CONSTTIME="$CFLAGS_FWRAPV"
  1041. mulodi_fixes_ftrapv=no
  1042. if test "$have_clang" = "yes"; then
  1043. saved_CFLAGS="$CFLAGS"
  1044. CFLAGS="$CFLAGS $CFLAGS_FTRAPV"
  1045. AC_MSG_CHECKING([whether clang -ftrapv can link a 64-bit int multiply])
  1046. AC_LINK_IFELSE([
  1047. AC_LANG_SOURCE([[
  1048. #include <stdint.h>
  1049. #include <stdlib.h>
  1050. int main(int argc, char **argv)
  1051. {
  1052. int64_t x = ((int64_t)atoi(argv[1])) * (int64_t)atoi(argv[2])
  1053. * (int64_t)atoi(argv[3]);
  1054. return x == 9;
  1055. } ]])],
  1056. [ftrapv_can_link=yes; AC_MSG_RESULT([yes])],
  1057. [ftrapv_can_link=no; AC_MSG_RESULT([no])])
  1058. if test "$ftrapv_can_link" = "no"; then
  1059. AC_MSG_CHECKING([whether defining __mulodi4 fixes that])
  1060. AC_LINK_IFELSE([
  1061. AC_LANG_SOURCE([[
  1062. #include <stdint.h>
  1063. #include <stdlib.h>
  1064. int64_t __mulodi4(int64_t a, int64_t b, int *overflow) {
  1065. *overflow=0;
  1066. return a;
  1067. }
  1068. int main(int argc, char **argv)
  1069. {
  1070. int64_t x = ((int64_t)atoi(argv[1])) * (int64_t)atoi(argv[2])
  1071. * (int64_t)atoi(argv[3]);
  1072. return x == 9;
  1073. } ]])],
  1074. [mulodi_fixes_ftrapv=yes; AC_MSG_RESULT([yes])],
  1075. [mulodi_fixes_ftrapv=no; AC_MSG_RESULT([no])])
  1076. fi
  1077. CFLAGS="$saved_CFLAGS"
  1078. fi
  1079. AM_CONDITIONAL(ADD_MULODI4, test "$mulodi_fixes_ftrapv" = "yes")
  1080. dnl These cflags add bunches of branches, and we haven't been able to
  1081. dnl persuade ourselves that they're suitable for code that needs to be
  1082. dnl constant time.
  1083. AC_SUBST(CFLAGS_BUGTRAP)
  1084. dnl These cflags are variant ones sutable for code that needs to be
  1085. dnl constant-time.
  1086. AC_SUBST(CFLAGS_CONSTTIME)
  1087. if test "x$enable_linker_hardening" != "xno"; then
  1088. TOR_CHECK_LDFLAGS(-z relro -z now, "$all_ldflags_for_check", "$all_libs_for_check")
  1089. fi
  1090. # For backtrace support
  1091. TOR_CHECK_LDFLAGS(-rdynamic)
  1092. dnl ------------------------------------------------------
  1093. dnl Now see if we have a -fomit-frame-pointer compiler option.
  1094. saved_CFLAGS="$CFLAGS"
  1095. TOR_CHECK_CFLAGS(-fomit-frame-pointer)
  1096. F_OMIT_FRAME_POINTER=''
  1097. if test "$saved_CFLAGS" != "$CFLAGS"; then
  1098. if test "$fragile_hardening" = "yes"; then
  1099. F_OMIT_FRAME_POINTER='-fomit-frame-pointer'
  1100. fi
  1101. fi
  1102. CFLAGS="$saved_CFLAGS"
  1103. AC_SUBST(F_OMIT_FRAME_POINTER)
  1104. dnl ------------------------------------------------------
  1105. dnl If we are adding -fomit-frame-pointer (or if the compiler's doing it
  1106. dnl for us, as GCC 4.6 and later do at many optimization levels), then
  1107. dnl we should try to add -fasynchronous-unwind-tables so that our backtrace
  1108. dnl code will work.
  1109. TOR_CHECK_CFLAGS(-fasynchronous-unwind-tables)
  1110. dnl ============================================================
  1111. dnl Check for libseccomp
  1112. if test "x$enable_seccomp" != "xno"; then
  1113. AC_CHECK_HEADERS([seccomp.h])
  1114. AC_SEARCH_LIBS(seccomp_init, [seccomp])
  1115. fi
  1116. dnl ============================================================
  1117. dnl Check for libscrypt
  1118. if test "x$enable_libscrypt" != "xno"; then
  1119. AC_CHECK_HEADERS([libscrypt.h])
  1120. AC_SEARCH_LIBS(libscrypt_scrypt, [scrypt])
  1121. AC_CHECK_FUNCS([libscrypt_scrypt])
  1122. fi
  1123. dnl ============================================================
  1124. dnl We need an implementation of curve25519.
  1125. dnl set these defaults.
  1126. build_curve25519_donna=no
  1127. build_curve25519_donna_c64=no
  1128. use_curve25519_donna=no
  1129. use_curve25519_nacl=no
  1130. CURVE25519_LIBS=
  1131. dnl The best choice is using curve25519-donna-c64, but that requires
  1132. dnl that we
  1133. AC_CACHE_CHECK([whether we can use curve25519-donna-c64],
  1134. tor_cv_can_use_curve25519_donna_c64,
  1135. [AC_RUN_IFELSE(
  1136. [AC_LANG_PROGRAM([dnl
  1137. #include <stdint.h>
  1138. typedef unsigned uint128_t __attribute__((mode(TI)));
  1139. int func(uint64_t a, uint64_t b) {
  1140. uint128_t c = ((uint128_t)a) * b;
  1141. int ok = ((uint64_t)(c>>96)) == 522859 &&
  1142. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  1143. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  1144. (((uint64_t)(c))&0xffffffffL) == 0;
  1145. return ok;
  1146. }
  1147. ], [dnl
  1148. int ok = func( ((uint64_t)2000000000) * 1000000000,
  1149. ((uint64_t)1234567890) << 24);
  1150. return !ok;
  1151. ])],
  1152. [tor_cv_can_use_curve25519_donna_c64=yes],
  1153. [tor_cv_can_use_curve25519_donna_c64=no],
  1154. [AC_LINK_IFELSE(
  1155. [AC_LANG_PROGRAM([dnl
  1156. #include <stdint.h>
  1157. typedef unsigned uint128_t __attribute__((mode(TI)));
  1158. int func(uint64_t a, uint64_t b) {
  1159. uint128_t c = ((uint128_t)a) * b;
  1160. int ok = ((uint64_t)(c>>96)) == 522859 &&
  1161. (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
  1162. (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
  1163. (((uint64_t)(c))&0xffffffffL) == 0;
  1164. return ok;
  1165. }
  1166. ], [dnl
  1167. int ok = func( ((uint64_t)2000000000) * 1000000000,
  1168. ((uint64_t)1234567890) << 24);
  1169. return !ok;
  1170. ])],
  1171. [tor_cv_can_use_curve25519_donna_c64=cross],
  1172. [tor_cv_can_use_curve25519_donna_c64=no])])])
  1173. AC_CHECK_HEADERS([crypto_scalarmult_curve25519.h \
  1174. nacl/crypto_scalarmult_curve25519.h])
  1175. AC_CACHE_CHECK([for nacl compiled with a fast curve25519 implementation],
  1176. tor_cv_can_use_curve25519_nacl,
  1177. [tor_saved_LIBS="$LIBS"
  1178. LIBS="$LIBS -lnacl"
  1179. AC_LINK_IFELSE(
  1180. [AC_LANG_PROGRAM([dnl
  1181. #ifdef HAVE_CRYPTO_SCALARMULT_CURVE25519_H
  1182. #include <crypto_scalarmult_curve25519.h>
  1183. #elif defined(HAVE_NACL_CRYPTO_SCALARMULT_CURVE25519_H)
  1184. #include <nacl/crypto_scalarmult_curve25519.h>
  1185. #endif
  1186. #ifdef crypto_scalarmult_curve25519_ref_BYTES
  1187. #error Hey, this is the reference implementation! That's not fast.
  1188. #endif
  1189. ], [
  1190. unsigned char *a, *b, *c; crypto_scalarmult_curve25519(a,b,c);
  1191. ])], [tor_cv_can_use_curve25519_nacl=yes],
  1192. [tor_cv_can_use_curve25519_nacl=no])
  1193. LIBS="$tor_saved_LIBS" ])
  1194. dnl Okay, now we need to figure out which one to actually use. Fall back
  1195. dnl to curve25519-donna.c
  1196. if test "x$tor_cv_can_use_curve25519_donna_c64" != "xno"; then
  1197. build_curve25519_donna_c64=yes
  1198. use_curve25519_donna=yes
  1199. elif test "x$tor_cv_can_use_curve25519_nacl" = "xyes"; then
  1200. use_curve25519_nacl=yes
  1201. CURVE25519_LIBS=-lnacl
  1202. else
  1203. build_curve25519_donna=yes
  1204. use_curve25519_donna=yes
  1205. fi
  1206. if test "x$use_curve25519_donna" = "xyes"; then
  1207. AC_DEFINE(USE_CURVE25519_DONNA, 1,
  1208. [Defined if we should use an internal curve25519_donna{,_c64} implementation])
  1209. fi
  1210. if test "x$use_curve25519_nacl" = "xyes"; then
  1211. AC_DEFINE(USE_CURVE25519_NACL, 1,
  1212. [Defined if we should use a curve25519 from nacl])
  1213. fi
  1214. AM_CONDITIONAL(BUILD_CURVE25519_DONNA,
  1215. test "x$build_curve25519_donna" = "xyes")
  1216. AM_CONDITIONAL(BUILD_CURVE25519_DONNA_C64,
  1217. test "x$build_curve25519_donna_c64" = "xyes")
  1218. AC_SUBST(CURVE25519_LIBS)
  1219. dnl Make sure to enable support for large off_t if available.
  1220. AC_SYS_LARGEFILE
  1221. AC_CHECK_HEADERS([assert.h \
  1222. errno.h \
  1223. fcntl.h \
  1224. signal.h \
  1225. string.h \
  1226. sys/capability.h \
  1227. sys/fcntl.h \
  1228. sys/stat.h \
  1229. sys/time.h \
  1230. sys/types.h \
  1231. time.h \
  1232. unistd.h \
  1233. arpa/inet.h \
  1234. crt_externs.h \
  1235. execinfo.h \
  1236. gnu/libc-version.h \
  1237. grp.h \
  1238. ifaddrs.h \
  1239. inttypes.h \
  1240. limits.h \
  1241. linux/types.h \
  1242. machine/limits.h \
  1243. malloc.h \
  1244. malloc/malloc.h \
  1245. malloc_np.h \
  1246. netdb.h \
  1247. netinet/in.h \
  1248. netinet/in6.h \
  1249. pwd.h \
  1250. readpassphrase.h \
  1251. stdint.h \
  1252. stdatomic.h \
  1253. sys/eventfd.h \
  1254. sys/file.h \
  1255. sys/ioctl.h \
  1256. sys/limits.h \
  1257. sys/mman.h \
  1258. sys/param.h \
  1259. sys/prctl.h \
  1260. sys/random.h \
  1261. sys/resource.h \
  1262. sys/select.h \
  1263. sys/socket.h \
  1264. sys/statvfs.h \
  1265. sys/syscall.h \
  1266. sys/sysctl.h \
  1267. sys/syslimits.h \
  1268. sys/time.h \
  1269. sys/types.h \
  1270. sys/un.h \
  1271. sys/utime.h \
  1272. sys/wait.h \
  1273. syslog.h \
  1274. utime.h])
  1275. AC_CHECK_HEADERS(sys/param.h)
  1276. AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
  1277. [#ifdef HAVE_SYS_TYPES_H
  1278. #include <sys/types.h>
  1279. #endif
  1280. #ifdef HAVE_SYS_SOCKET_H
  1281. #include <sys/socket.h>
  1282. #endif])
  1283. AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_found=0,
  1284. [#ifdef HAVE_SYS_TYPES_H
  1285. #include <sys/types.h>
  1286. #endif
  1287. #ifdef HAVE_SYS_SOCKET_H
  1288. #include <sys/socket.h>
  1289. #endif
  1290. #ifdef HAVE_NET_IF_H
  1291. #include <net/if.h>
  1292. #endif
  1293. #ifdef HAVE_NETINET_IN_H
  1294. #include <netinet/in.h>
  1295. #endif])
  1296. AC_CHECK_HEADERS(linux/if.h,[],[],
  1297. [
  1298. #ifdef HAVE_SYS_SOCKET_H
  1299. #include <sys/socket.h>
  1300. #endif
  1301. ])
  1302. AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
  1303. linux_netfilter_ipv4=1, linux_netfilter_ipv4=0,
  1304. [#ifdef HAVE_SYS_TYPES_H
  1305. #include <sys/types.h>
  1306. #endif
  1307. #ifdef HAVE_SYS_SOCKET_H
  1308. #include <sys/socket.h>
  1309. #endif
  1310. #ifdef HAVE_LIMITS_H
  1311. #include <limits.h>
  1312. #endif
  1313. #ifdef HAVE_LINUX_TYPES_H
  1314. #include <linux/types.h>
  1315. #endif
  1316. #ifdef HAVE_NETINET_IN6_H
  1317. #include <netinet/in6.h>
  1318. #endif
  1319. #ifdef HAVE_NETINET_IN_H
  1320. #include <netinet/in.h>
  1321. #endif])
  1322. AC_CHECK_HEADERS(linux/netfilter_ipv6/ip6_tables.h,
  1323. linux_netfilter_ipv6_ip6_tables=1, linux_netfilter_ipv6_ip6_tables=0,
  1324. [#ifdef HAVE_SYS_TYPES_H
  1325. #include <sys/types.h>
  1326. #endif
  1327. #ifdef HAVE_SYS_SOCKET_H
  1328. #include <sys/socket.h>
  1329. #endif
  1330. #ifdef HAVE_LIMITS_H
  1331. #include <limits.h>
  1332. #endif
  1333. #ifdef HAVE_LINUX_TYPES_H
  1334. #include <linux/types.h>
  1335. #endif
  1336. #ifdef HAVE_NETINET_IN6_H
  1337. #include <netinet/in6.h>
  1338. #endif
  1339. #ifdef HAVE_NETINET_IN_H
  1340. #include <netinet/in.h>
  1341. #endif
  1342. #ifdef HAVE_LINUX_IF_H
  1343. #include <linux/if.h>
  1344. #endif])
  1345. transparent_ok=0
  1346. if test "x$net_if_found" = "x1" && test "x$net_pfvar_found" = "x1"; then
  1347. transparent_ok=1
  1348. fi
  1349. if test "x$linux_netfilter_ipv4" = "x1"; then
  1350. transparent_ok=1
  1351. fi
  1352. if test "x$linux_netfilter_ipv6_ip6_tables" = "x1"; then
  1353. transparent_ok=1
  1354. fi
  1355. if test "x$transparent_ok" = "x1"; then
  1356. AC_DEFINE(USE_TRANSPARENT, 1, "Define to enable transparent proxy support")
  1357. else
  1358. AC_MSG_NOTICE([Transparent proxy support enabled, but missing headers.])
  1359. fi
  1360. AC_CHECK_MEMBERS([struct timeval.tv_sec], , ,
  1361. [#ifdef HAVE_SYS_TYPES_H
  1362. #include <sys/types.h>
  1363. #endif
  1364. #ifdef HAVE_SYS_TIME_H
  1365. #include <sys/time.h>
  1366. #endif])
  1367. dnl In case we aren't given a working stdint.h, we'll need to grow our own.
  1368. dnl Watch out.
  1369. AC_CHECK_SIZEOF(int8_t)
  1370. AC_CHECK_SIZEOF(int16_t)
  1371. AC_CHECK_SIZEOF(int32_t)
  1372. AC_CHECK_SIZEOF(int64_t)
  1373. AC_CHECK_SIZEOF(uint8_t)
  1374. AC_CHECK_SIZEOF(uint16_t)
  1375. AC_CHECK_SIZEOF(uint32_t)
  1376. AC_CHECK_SIZEOF(uint64_t)
  1377. AC_CHECK_SIZEOF(intptr_t)
  1378. AC_CHECK_SIZEOF(uintptr_t)
  1379. dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
  1380. AC_CHECK_SIZEOF(char)
  1381. AC_CHECK_SIZEOF(short)
  1382. AC_CHECK_SIZEOF(int)
  1383. AC_CHECK_SIZEOF(long)
  1384. AC_CHECK_SIZEOF(long long)
  1385. AC_CHECK_SIZEOF(__int64)
  1386. AC_CHECK_SIZEOF(void *)
  1387. AC_CHECK_SIZEOF(time_t)
  1388. AC_CHECK_SIZEOF(size_t)
  1389. AC_CHECK_SIZEOF(pid_t)
  1390. AC_CHECK_TYPES([uint, u_char, ssize_t])
  1391. AC_PC_FROM_UCONTEXT([:])
  1392. dnl used to include sockaddr_storage, but everybody has that.
  1393. AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t], , ,
  1394. [#ifdef HAVE_SYS_TYPES_H
  1395. #include <sys/types.h>
  1396. #endif
  1397. #ifdef HAVE_NETINET_IN_H
  1398. #include <netinet/in.h>
  1399. #endif
  1400. #ifdef HAVE_NETINET_IN6_H
  1401. #include <netinet/in6.h>
  1402. #endif
  1403. #ifdef HAVE_SYS_SOCKET_H
  1404. #include <sys/socket.h>
  1405. #endif
  1406. #ifdef _WIN32
  1407. #define _WIN32_WINNT 0x0501
  1408. #define WIN32_LEAN_AND_MEAN
  1409. #include <winsock2.h>
  1410. #include <ws2tcpip.h>
  1411. #endif
  1412. ])
  1413. AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len], , ,
  1414. [#ifdef HAVE_SYS_TYPES_H
  1415. #include <sys/types.h>
  1416. #endif
  1417. #ifdef HAVE_NETINET_IN_H
  1418. #include <netinet/in.h>
  1419. #endif
  1420. #ifdef HAVE_NETINET_IN6_H
  1421. #include <netinet/in6.h>
  1422. #endif
  1423. #ifdef HAVE_SYS_SOCKET_H
  1424. #include <sys/socket.h>
  1425. #endif
  1426. #ifdef _WIN32
  1427. #define _WIN32_WINNT 0x0501
  1428. #define WIN32_LEAN_AND_MEAN
  1429. #include <winsock2.h>
  1430. #include <ws2tcpip.h>
  1431. #endif
  1432. ])
  1433. AC_CHECK_TYPES([rlim_t], , ,
  1434. [#ifdef HAVE_SYS_TYPES_H
  1435. #include <sys/types.h>
  1436. #endif
  1437. #ifdef HAVE_SYS_TIME_H
  1438. #include <sys/time.h>
  1439. #endif
  1440. #ifdef HAVE_SYS_RESOURCE_H
  1441. #include <sys/resource.h>
  1442. #endif
  1443. ])
  1444. AX_CHECK_SIGN([time_t],
  1445. [ : ],
  1446. [ : ], [
  1447. #ifdef HAVE_SYS_TYPES_H
  1448. #include <sys/types.h>
  1449. #endif
  1450. #ifdef HAVE_SYS_TIME_H
  1451. #include <sys/time.h>
  1452. #endif
  1453. #ifdef HAVE_TIME_H
  1454. #include <time.h>
  1455. #endif
  1456. ])
  1457. if test "$ax_cv_decl_time_t_signed" = "no"; then
  1458. AC_MSG_ERROR([You have an unsigned time_t; Tor does not support that. Please tell the Tor developers about your interesting platform.])
  1459. fi
  1460. AX_CHECK_SIGN([size_t],
  1461. [ tor_cv_size_t_signed=yes ],
  1462. [ tor_cv_size_t_signed=no ], [
  1463. #ifdef HAVE_SYS_TYPES_H
  1464. #include <sys/types.h>
  1465. #endif
  1466. ])
  1467. if test "$ax_cv_decl_size_t_signed" = "yes"; then
  1468. AC_MSG_ERROR([You have a signed size_t; that's grossly nonconformant.])
  1469. fi
  1470. AX_CHECK_SIGN([enum always],
  1471. [ AC_DEFINE(ENUM_VALS_ARE_SIGNED, 1, [Define if enum is always signed]) ],
  1472. [ : ], [
  1473. enum always { AAA, BBB, CCC };
  1474. ])
  1475. AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
  1476. #ifdef HAVE_SYS_SOCKET_H
  1477. #include <sys/socket.h>
  1478. #endif
  1479. ])
  1480. # We want to make sure that we _don't_ have a cell_t defined, like IRIX does.
  1481. AC_CHECK_SIZEOF(cell_t)
  1482. # Now make sure that NULL can be represented as zero bytes.
  1483. AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
  1484. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1485. [[#include <stdlib.h>
  1486. #include <string.h>
  1487. #include <stdio.h>
  1488. #ifdef HAVE_STDDEF_H
  1489. #include <stddef.h>
  1490. #endif
  1491. int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
  1492. return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
  1493. [tor_cv_null_is_zero=yes],
  1494. [tor_cv_null_is_zero=no],
  1495. [tor_cv_null_is_zero=cross])])
  1496. if test "$tor_cv_null_is_zero" = "cross"; then
  1497. # Cross-compiling; let's hope that the target isn't raving mad.
  1498. AC_MSG_NOTICE([Cross-compiling: we'll assume that NULL is represented as a sequence of 0-valued bytes.])
  1499. fi
  1500. if test "$tor_cv_null_is_zero" != "no"; then
  1501. AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
  1502. [Define to 1 iff memset(0) sets pointers to NULL])
  1503. fi
  1504. AC_CACHE_CHECK([whether memset(0) sets doubles to 0.0], tor_cv_dbl0_is_zero,
  1505. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1506. [[#include <stdlib.h>
  1507. #include <string.h>
  1508. #include <stdio.h>
  1509. #ifdef HAVE_STDDEF_H
  1510. #include <stddef.h>
  1511. #endif
  1512. int main () { double d1,d2; d1=0; memset(&d2,0,sizeof(d2));
  1513. return memcmp(&d1,&d2,sizeof(d1))?1:0; }]])],
  1514. [tor_cv_dbl0_is_zero=yes],
  1515. [tor_cv_dbl0_is_zero=no],
  1516. [tor_cv_dbl0_is_zero=cross])])
  1517. if test "$tor_cv_dbl0_is_zero" = "cross"; then
  1518. # Cross-compiling; let's hope that the target isn't raving mad.
  1519. AC_MSG_NOTICE([Cross-compiling: we'll assume that 0.0 can be represented as a sequence of 0-valued bytes.])
  1520. fi
  1521. if test "$tor_cv_dbl0_is_zero" != "no"; then
  1522. AC_DEFINE([DOUBLE_0_REP_IS_ZERO_BYTES], 1,
  1523. [Define to 1 iff memset(0) sets doubles to 0.0])
  1524. fi
  1525. # And what happens when we malloc zero?
  1526. AC_CACHE_CHECK([whether we can malloc(0) safely.], tor_cv_malloc_zero_works,
  1527. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1528. [[#include <stdlib.h>
  1529. #include <string.h>
  1530. #include <stdio.h>
  1531. #ifdef HAVE_STDDEF_H
  1532. #include <stddef.h>
  1533. #endif
  1534. int main () { return malloc(0)?0:1; }]])],
  1535. [tor_cv_malloc_zero_works=yes],
  1536. [tor_cv_malloc_zero_works=no],
  1537. [tor_cv_malloc_zero_works=cross])])
  1538. if test "$tor_cv_malloc_zero_works" = "cross"; then
  1539. # Cross-compiling; let's hope that the target isn't raving mad.
  1540. AC_MSG_NOTICE([Cross-compiling: we'll assume that we need to check malloc() arguments for 0.])
  1541. fi
  1542. if test "$tor_cv_malloc_zero_works" = "yes"; then
  1543. AC_DEFINE([MALLOC_ZERO_WORKS], 1,
  1544. [Define to 1 iff malloc(0) returns a pointer])
  1545. fi
  1546. # whether we seem to be in a 2s-complement world.
  1547. AC_CACHE_CHECK([whether we are using 2s-complement arithmetic], tor_cv_twos_complement,
  1548. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1549. [[int main () { int problem = ((-99) != (~99)+1);
  1550. return problem ? 1 : 0; }]])],
  1551. [tor_cv_twos_complement=yes],
  1552. [tor_cv_twos_complement=no],
  1553. [tor_cv_twos_complement=cross])])
  1554. if test "$tor_cv_twos_complement" = "cross"; then
  1555. # Cross-compiling; let's hope that the target isn't raving mad.
  1556. AC_MSG_NOTICE([Cross-compiling: we'll assume that negative integers are represented with two's complement.])
  1557. fi
  1558. if test "$tor_cv_twos_complement" != "no"; then
  1559. AC_DEFINE([USING_TWOS_COMPLEMENT], 1,
  1560. [Define to 1 iff we represent negative integers with
  1561. two's complement])
  1562. fi
  1563. # What does shifting a negative value do?
  1564. AC_CACHE_CHECK([whether right-shift on negative values does sign-extension], tor_cv_sign_extend,
  1565. [AC_RUN_IFELSE([AC_LANG_SOURCE(
  1566. [[int main () { int okay = (-60 >> 8) == -1; return okay ? 0 : 1; }]])],
  1567. [tor_cv_sign_extend=yes],
  1568. [tor_cv_sign_extend=no],
  1569. [tor_cv_sign_extend=cross])])
  1570. if test "$tor_cv_sign_extend" = "cross"; then
  1571. # Cross-compiling; let's hope that the target isn't raving mad.
  1572. AC_MSG_NOTICE([Cross-compiling: we'll assume that right-shifting negative integers causes sign-extension])
  1573. fi
  1574. if test "$tor_cv_sign_extend" != "no"; then
  1575. AC_DEFINE([RSHIFT_DOES_SIGN_EXTEND], 1,
  1576. [Define to 1 iff right-shifting a negative value performs sign-extension])
  1577. fi
  1578. # Is uint8_t the same type as unsigned char?
  1579. AC_CACHE_CHECK([whether uint8_t is the same type as unsigned char], tor_cv_uint8_uchar,
  1580. [AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
  1581. #include <stdint.h>
  1582. extern uint8_t c;
  1583. unsigned char c;]])],
  1584. [tor_cv_uint8_uchar=yes],
  1585. [tor_cv_uint8_uchar=no],
  1586. [tor_cv_uint8_uchar=cross])])
  1587. if test "$tor_cv_uint8_uchar" = "cross"; then
  1588. AC_MSG_NOTICE([Cross-compiling: we'll assume that uint8_t is the same type as unsigned char])
  1589. fi
  1590. if test "$tor_cv_uint8_uchar" = "no"; then
  1591. AC_MSG_ERROR([We assume that uint8_t is the same type as unsigned char, but your compiler disagrees.])
  1592. fi
  1593. # Whether we should use the dmalloc memory allocation debugging library.
  1594. AC_MSG_CHECKING(whether to use dmalloc (debug memory allocation library))
  1595. AC_ARG_WITH(dmalloc,
  1596. AS_HELP_STRING(--with-dmalloc, [use debug memory allocation library]),
  1597. [if [[ "$withval" = "yes" ]]; then
  1598. dmalloc=1
  1599. AC_MSG_RESULT(yes)
  1600. else
  1601. dmalloc=1
  1602. AC_MSG_RESULT(no)
  1603. fi], [ dmalloc=0; AC_MSG_RESULT(no) ]
  1604. )
  1605. if [[ $dmalloc -eq 1 ]]; then
  1606. AC_CHECK_HEADERS(dmalloc.h, , AC_MSG_ERROR(dmalloc header file not found. Do you have the development files for dmalloc installed?))
  1607. AC_SEARCH_LIBS(dmalloc_malloc, [dmallocth dmalloc], , AC_MSG_ERROR(Libdmalloc library not found. If you enable it you better have it installed.))
  1608. AC_DEFINE(USE_DMALLOC, 1, [Debug memory allocation library])
  1609. AC_CHECK_FUNCS(dmalloc_strdup dmalloc_strndup)
  1610. fi
  1611. AC_ARG_WITH(tcmalloc,
  1612. AS_HELP_STRING(--with-tcmalloc, [use tcmalloc memory allocation library]),
  1613. [ tcmalloc=yes ], [ tcmalloc=no ])
  1614. if test "x$tcmalloc" = "xyes"; then
  1615. LDFLAGS="-ltcmalloc $LDFLAGS"
  1616. fi
  1617. using_custom_malloc=no
  1618. if test "x$enable_openbsd_malloc" = "xyes"; then
  1619. using_custom_malloc=yes
  1620. fi
  1621. if test "x$tcmalloc" = "xyes"; then
  1622. using_custom_malloc=yes
  1623. fi
  1624. if test "$using_custom_malloc" = "no"; then
  1625. AC_CHECK_FUNCS(mallinfo)
  1626. fi
  1627. if test "$using_custom_malloc" = "yes"; then
  1628. # Tell the C compiler not to use the system allocator functions.
  1629. TOR_CHECK_CFLAGS([-fno-builtin-malloc -fno-builtin-realloc -fno-builtin-calloc -fno-builtin-free])
  1630. fi
  1631. # By default, we're going to assume we don't have mlockall()
  1632. # bionic and other platforms have various broken mlockall subsystems.
  1633. # Some systems don't have a working mlockall, some aren't linkable,
  1634. # and some have it but don't declare it.
  1635. AC_CHECK_FUNCS(mlockall)
  1636. AC_CHECK_DECLS([mlockall], , , [
  1637. #ifdef HAVE_SYS_MMAN_H
  1638. #include <sys/mman.h>
  1639. #endif])
  1640. # Allow user to specify an alternate syslog facility
  1641. AC_ARG_WITH(syslog-facility,
  1642. AS_HELP_STRING(--with-syslog-facility=LOG, [syslog facility to use (default=LOG_DAEMON)]),
  1643. syslog_facility="$withval", syslog_facility="LOG_DAEMON")
  1644. AC_DEFINE_UNQUOTED(LOGFACILITY,$syslog_facility,[name of the syslog facility])
  1645. AC_SUBST(LOGFACILITY)
  1646. # Check if we have getresuid and getresgid
  1647. AC_CHECK_FUNCS(getresuid getresgid)
  1648. # Check for gethostbyname_r in all its glorious incompatible versions.
  1649. # (This logic is based on that in Python's configure.in)
  1650. AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
  1651. [Define this if you have any gethostbyname_r()])
  1652. AC_CHECK_FUNC(gethostbyname_r, [
  1653. AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
  1654. OLD_CFLAGS=$CFLAGS
  1655. CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
  1656. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  1657. #include <netdb.h>
  1658. ]], [[
  1659. char *cp1, *cp2;
  1660. struct hostent *h1, *h2;
  1661. int i1, i2;
  1662. (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
  1663. ]])],[
  1664. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1665. AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
  1666. [Define this if gethostbyname_r takes 6 arguments])
  1667. AC_MSG_RESULT(6)
  1668. ], [
  1669. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  1670. #include <netdb.h>
  1671. ]], [[
  1672. char *cp1, *cp2;
  1673. struct hostent *h1;
  1674. int i1, i2;
  1675. (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
  1676. ]])], [
  1677. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1678. AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
  1679. [Define this if gethostbyname_r takes 5 arguments])
  1680. AC_MSG_RESULT(5)
  1681. ], [
  1682. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  1683. #include <netdb.h>
  1684. ]], [[
  1685. char *cp1;
  1686. struct hostent *h1;
  1687. struct hostent_data hd;
  1688. (void) gethostbyname_r(cp1,h1,&hd);
  1689. ]])], [
  1690. AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  1691. AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
  1692. [Define this if gethostbyname_r takes 3 arguments])
  1693. AC_MSG_RESULT(3)
  1694. ], [
  1695. AC_MSG_RESULT(0)
  1696. ])
  1697. ])
  1698. ])
  1699. CFLAGS=$OLD_CFLAGS
  1700. ])
  1701. AC_CACHE_CHECK([whether the C compiler supports __func__],
  1702. tor_cv_have_func_macro,
  1703. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1704. #include <stdio.h>
  1705. int main(int c, char **v) { puts(__func__); }])],
  1706. tor_cv_have_func_macro=yes,
  1707. tor_cv_have_func_macro=no))
  1708. AC_CACHE_CHECK([whether the C compiler supports __FUNC__],
  1709. tor_cv_have_FUNC_macro,
  1710. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1711. #include <stdio.h>
  1712. int main(int c, char **v) { puts(__FUNC__); }])],
  1713. tor_cv_have_FUNC_macro=yes,
  1714. tor_cv_have_FUNC_macro=no))
  1715. AC_CACHE_CHECK([whether the C compiler supports __FUNCTION__],
  1716. tor_cv_have_FUNCTION_macro,
  1717. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1718. #include <stdio.h>
  1719. int main(int c, char **v) { puts(__FUNCTION__); }])],
  1720. tor_cv_have_FUNCTION_macro=yes,
  1721. tor_cv_have_FUNCTION_macro=no))
  1722. AC_CACHE_CHECK([whether we have extern char **environ already declared],
  1723. tor_cv_have_environ_declared,
  1724. AC_COMPILE_IFELSE([AC_LANG_SOURCE([
  1725. #ifdef HAVE_UNISTD_H
  1726. #include <unistd.h>
  1727. #endif
  1728. #include <stdlib.h>
  1729. int main(int c, char **v) { char **t = environ; }])],
  1730. tor_cv_have_environ_declared=yes,
  1731. tor_cv_have_environ_declared=no))
  1732. if test "$tor_cv_have_func_macro" = "yes"; then
  1733. AC_DEFINE(HAVE_MACRO__func__, 1, [Defined if the compiler supports __func__])
  1734. fi
  1735. if test "$tor_cv_have_FUNC_macro" = "yes"; then
  1736. AC_DEFINE(HAVE_MACRO__FUNC__, 1, [Defined if the compiler supports __FUNC__])
  1737. fi
  1738. if test "$tor_cv_have_FUNCTION_macro" = "yes"; then
  1739. AC_DEFINE(HAVE_MACRO__FUNCTION__, 1,
  1740. [Defined if the compiler supports __FUNCTION__])
  1741. fi
  1742. if test "$tor_cv_have_environ_declared" = "yes"; then
  1743. AC_DEFINE(HAVE_EXTERN_ENVIRON_DECLARED, 1,
  1744. [Defined if we have extern char **environ already declared])
  1745. fi
  1746. # $prefix stores the value of the --prefix command line option, or
  1747. # NONE if the option wasn't set. In the case that it wasn't set, make
  1748. # it be the default, so that we can use it to expand directories now.
  1749. if test "x$prefix" = "xNONE"; then
  1750. prefix=$ac_default_prefix
  1751. fi
  1752. # and similarly for $exec_prefix
  1753. if test "x$exec_prefix" = "xNONE"; then
  1754. exec_prefix=$prefix
  1755. fi
  1756. if test "x$BUILDDIR" = "x"; then
  1757. BUILDDIR=`pwd`
  1758. fi
  1759. AC_SUBST(BUILDDIR)
  1760. AH_TEMPLATE([BUILDDIR],[tor's build directory])
  1761. AC_DEFINE_UNQUOTED(BUILDDIR,"$BUILDDIR")
  1762. if test "x$SRCDIR" = "x"; then
  1763. SRCDIR=$(cd "$srcdir"; pwd)
  1764. fi
  1765. AH_TEMPLATE([SRCDIR],[tor's sourcedir directory])
  1766. AC_DEFINE_UNQUOTED(SRCDIR,"$SRCDIR")
  1767. if test "x$CONFDIR" = "x"; then
  1768. CONFDIR=`eval echo $sysconfdir/tor`
  1769. fi
  1770. AC_SUBST(CONFDIR)
  1771. AH_TEMPLATE([CONFDIR],[tor's configuration directory])
  1772. AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")
  1773. BINDIR=`eval echo $bindir`
  1774. AC_SUBST(BINDIR)
  1775. LOCALSTATEDIR=`eval echo $localstatedir`
  1776. AC_SUBST(LOCALSTATEDIR)
  1777. if test "$bwin32" = "true"; then
  1778. # Test if the linker supports the --nxcompat and --dynamicbase options
  1779. # for Windows
  1780. save_LDFLAGS="$LDFLAGS"
  1781. LDFLAGS="-Wl,--nxcompat -Wl,--dynamicbase"
  1782. AC_MSG_CHECKING([whether the linker supports DllCharacteristics])
  1783. AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
  1784. [AC_MSG_RESULT([yes])]
  1785. [save_LDFLAGS="$save_LDFLAGS $LDFLAGS"],
  1786. [AC_MSG_RESULT([no])]
  1787. )
  1788. LDFLAGS="$save_LDFLAGS"
  1789. fi
  1790. # Set CFLAGS _after_ all the above checks, since our warnings are stricter
  1791. # than autoconf's macros like.
  1792. if test "$GCC" = "yes"; then
  1793. # Disable GCC's strict aliasing checks. They are an hours-to-debug
  1794. # accident waiting to happen.
  1795. CFLAGS="$CFLAGS -Wall -fno-strict-aliasing"
  1796. else
  1797. # Override optimization level for non-gcc compilers
  1798. CFLAGS="$CFLAGS -O"
  1799. enable_gcc_warnings=no
  1800. enable_gcc_warnings_advisory=no
  1801. fi
  1802. # Warnings implies advisory-warnings and -Werror.
  1803. if test "$enable_gcc_warnings" = "yes"; then
  1804. enable_gcc_warnings_advisory=yes
  1805. enable_fatal_warnings=yes
  1806. fi
  1807. # OS X Lion started deprecating the system openssl. Let's just disable
  1808. # all deprecation warnings on OS X. Also, to potentially make the binary
  1809. # a little smaller, let's enable dead_strip.
  1810. case "$host_os" in
  1811. darwin*)
  1812. CFLAGS="$CFLAGS -Wno-deprecated-declarations"
  1813. LDFLAGS="$LDFLAGS -dead_strip" ;;
  1814. esac
  1815. # Add some more warnings which we use in development but not in the
  1816. # released versions. (Some relevant gcc versions can't handle these.)
  1817. #
  1818. # Note that we have to do this near the end of the autoconf process, or
  1819. # else we may run into problems when these warnings hit on the testing C
  1820. # programs that autoconf wants to build.
  1821. if test "x$enable_gcc_warnings_advisory" != "xno"; then
  1822. case "$host" in
  1823. *-*-openbsd* | *-*-bitrig*)
  1824. # Some OpenBSD versions (like 4.8) have -Wsystem-headers by default.
  1825. # That's fine, except that the headers don't pass -Wredundant-decls.
  1826. # Therefore, let's disable -Wsystem-headers when we're building
  1827. # with maximal warnings on OpenBSD.
  1828. CFLAGS="$CFLAGS -Wno-system-headers" ;;
  1829. esac
  1830. # GCC4.3 users once report trouble with -Wstrict-overflow=5. GCC5 users
  1831. # have it work better.
  1832. # CFLAGS="$CFLAGS -Wstrict-overflow=1"
  1833. # This warning was added in gcc 4.3, but it appears to generate
  1834. # spurious warnings in gcc 4.4. I don't know if it works in 4.5.
  1835. #CFLAGS="$CFLAGS -Wlogical-op"
  1836. m4_foreach_w([warning_flag], [
  1837. -Waddress
  1838. -Waddress-of-array-temporary
  1839. -Waddress-of-temporary
  1840. -Wambiguous-macro
  1841. -Wanonymous-pack-parens
  1842. -Warc
  1843. -Warc-abi
  1844. -Warc-bridge-casts-disallowed-in-nonarc
  1845. -Warc-maybe-repeated-use-of-weak
  1846. -Warc-performSelector-leaks
  1847. -Warc-repeated-use-of-weak
  1848. -Warray-bounds
  1849. -Warray-bounds-pointer-arithmetic
  1850. -Wasm
  1851. -Wasm-operand-widths
  1852. -Watomic-properties
  1853. -Watomic-property-with-user-defined-accessor
  1854. -Wauto-import
  1855. -Wauto-storage-class
  1856. -Wauto-var-id
  1857. -Wavailability
  1858. -Wbackslash-newline-escape
  1859. -Wbad-array-new-length
  1860. -Wbind-to-temporary-copy
  1861. -Wbitfield-constant-conversion
  1862. -Wbool-conversion
  1863. -Wbool-conversions
  1864. -Wbuiltin-requires-header
  1865. -Wchar-align
  1866. -Wcompare-distinct-pointer-types
  1867. -Wcomplex-component-init
  1868. -Wconditional-type-mismatch
  1869. -Wconfig-macros
  1870. -Wconstant-conversion
  1871. -Wconstant-logical-operand
  1872. -Wconstexpr-not-const
  1873. -Wcustom-atomic-properties
  1874. -Wdangling-field
  1875. -Wdangling-initializer-list
  1876. -Wdate-time
  1877. -Wdelegating-ctor-cycles
  1878. -Wdeprecated-implementations
  1879. -Wdeprecated-register
  1880. -Wdirect-ivar-access
  1881. -Wdiscard-qual
  1882. -Wdistributed-object-modifiers
  1883. -Wdivision-by-zero
  1884. -Wdollar-in-identifier-extension
  1885. -Wdouble-promotion
  1886. -Wduplicate-decl-specifier
  1887. -Wduplicate-enum
  1888. -Wduplicate-method-arg
  1889. -Wduplicate-method-match
  1890. -Wduplicated-cond
  1891. -Wdynamic-class-memaccess
  1892. -Wembedded-directive
  1893. -Wempty-translation-unit
  1894. -Wenum-conversion
  1895. -Wexit-time-destructors
  1896. -Wexplicit-ownership-type
  1897. -Wextern-initializer
  1898. -Wextra
  1899. -Wextra-semi
  1900. -Wextra-tokens
  1901. -Wflexible-array-extensions
  1902. -Wfloat-conversion
  1903. -Wformat-non-iso
  1904. -Wfour-char-constants
  1905. -Wgcc-compat
  1906. -Wglobal-constructors
  1907. -Wgnu-array-member-paren-init
  1908. -Wgnu-designator
  1909. -Wgnu-static-float-init
  1910. -Wheader-guard
  1911. -Wheader-hygiene
  1912. -Widiomatic-parentheses
  1913. -Wignored-attributes
  1914. -Wimplicit-atomic-properties
  1915. -Wimplicit-conversion-floating-point-to-bool
  1916. -Wimplicit-exception-spec-mismatch
  1917. -Wimplicit-fallthrough
  1918. -Wimplicit-fallthrough-per-function
  1919. -Wimplicit-retain-self
  1920. -Wimport-preprocessor-directive-pedantic
  1921. -Wincompatible-library-redeclaration
  1922. -Wincompatible-pointer-types-discards-qualifiers
  1923. -Wincomplete-implementation
  1924. -Wincomplete-module
  1925. -Wincomplete-umbrella
  1926. -Winit-self
  1927. -Wint-conversions
  1928. -Wint-to-void-pointer-cast
  1929. -Winteger-overflow
  1930. -Winvalid-constexpr
  1931. -Winvalid-iboutlet
  1932. -Winvalid-noreturn
  1933. -Winvalid-pp-token
  1934. -Winvalid-source-encoding
  1935. -Winvalid-token-paste
  1936. -Wknr-promoted-parameter
  1937. -Wlarge-by-value-copy
  1938. -Wliteral-conversion
  1939. -Wliteral-range
  1940. -Wlocal-type-template-args
  1941. -Wlogical-op
  1942. -Wloop-analysis
  1943. -Wmain-return-type
  1944. -Wmalformed-warning-check
  1945. -Wmethod-signatures
  1946. -Wmicrosoft
  1947. -Wmicrosoft-exists
  1948. -Wmismatched-parameter-types
  1949. -Wmismatched-return-types
  1950. -Wmissing-field-initializers
  1951. -Wmissing-format-attribute
  1952. -Wmissing-noreturn
  1953. -Wmissing-selector-name
  1954. -Wmissing-sysroot
  1955. -Wmissing-variable-declarations
  1956. -Wmodule-conflict
  1957. -Wnested-anon-types
  1958. -Wnewline-eof
  1959. -Wnon-literal-null-conversion
  1960. -Wnon-pod-varargs
  1961. -Wnonportable-cfstrings
  1962. -Wnormalized=nfkc
  1963. -Wnull-arithmetic
  1964. -Wnull-character
  1965. -Wnull-conversion
  1966. -Wnull-dereference
  1967. -Wout-of-line-declaration
  1968. -Wover-aligned
  1969. -Woverlength-strings
  1970. -Woverride-init
  1971. -Woverriding-method-mismatch
  1972. -Wpointer-type-mismatch
  1973. -Wpredefined-identifier-outside-function
  1974. -Wprotocol-property-synthesis-ambiguity
  1975. -Wreadonly-iboutlet-property
  1976. -Wreadonly-setter-attrs
  1977. -Wreceiver-expr
  1978. -Wreceiver-forward-class
  1979. -Wreceiver-is-weak
  1980. -Wreinterpret-base-class
  1981. -Wrequires-super-attribute
  1982. -Wreserved-user-defined-literal
  1983. -Wreturn-stack-address
  1984. -Wsection
  1985. -Wselector-type-mismatch
  1986. -Wsentinel
  1987. -Wserialized-diagnostics
  1988. -Wshadow
  1989. -Wshift-count-negative
  1990. -Wshift-count-overflow
  1991. -Wshift-negative-value
  1992. -Wshift-overflow=2
  1993. -Wshift-sign-overflow
  1994. -Wshorten-64-to-32
  1995. -Wsizeof-array-argument
  1996. -Wsource-uses-openmp
  1997. -Wstatic-float-init
  1998. -Wstatic-in-inline
  1999. -Wstatic-local-in-inline
  2000. -Wstrict-overflow=1
  2001. -Wstring-compare
  2002. -Wstring-conversion
  2003. -Wstrlcpy-strlcat-size
  2004. -Wstrncat-size
  2005. -Wsuggest-attribute=format
  2006. -Wsuggest-attribute=noreturn
  2007. -Wsuper-class-method-mismatch
  2008. -Wswitch-bool
  2009. -Wsync-nand
  2010. -Wtautological-constant-out-of-range-compare
  2011. -Wtentative-definition-incomplete-type
  2012. -Wtrampolines
  2013. -Wtype-safety
  2014. -Wtypedef-redefinition
  2015. -Wtypename-missing
  2016. -Wundefined-inline
  2017. -Wundefined-internal
  2018. -Wundefined-reinterpret-cast
  2019. -Wunicode
  2020. -Wunicode-whitespace
  2021. -Wunknown-warning-option
  2022. -Wunnamed-type-template-args
  2023. -Wunneeded-member-function
  2024. -Wunsequenced
  2025. -Wunsupported-visibility
  2026. -Wunused-but-set-parameter
  2027. -Wunused-but-set-variable
  2028. -Wunused-command-line-argument
  2029. -Wunused-const-variable=2
  2030. -Wunused-exception-parameter
  2031. -Wunused-local-typedefs
  2032. -Wunused-member-function
  2033. -Wunused-sanitize-argument
  2034. -Wunused-volatile-lvalue
  2035. -Wuser-defined-literals
  2036. -Wvariadic-macros
  2037. -Wvector-conversion
  2038. -Wvector-conversions
  2039. -Wvexing-parse
  2040. -Wvisibility
  2041. -Wvla-extension
  2042. -Wzero-length-array
  2043. ], [ TOR_CHECK_CFLAGS([warning_flag]) ])
  2044. dnl We should re-enable this in some later version. Clang doesn't
  2045. dnl mind, but it causes trouble with GCC.
  2046. dnl -Wstrict-overflow=2
  2047. dnl These seem to require annotations that we don't currently use,
  2048. dnl and they give false positives in our pthreads wrappers. (Clang 4)
  2049. dnl -Wthread-safety
  2050. dnl -Wthread-safety-analysis
  2051. dnl -Wthread-safety-attributes
  2052. dnl -Wthread-safety-beta
  2053. dnl -Wthread-safety-precise
  2054. CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith"
  2055. CFLAGS="$CFLAGS -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings"
  2056. CFLAGS="$CFLAGS -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2"
  2057. CFLAGS="$CFLAGS -Wwrite-strings"
  2058. CFLAGS="$CFLAGS -Wnested-externs -Wbad-function-cast -Wswitch-enum"
  2059. CFLAGS="$CFLAGS -Waggregate-return -Wpacked -Wunused"
  2060. CFLAGS="$CFLAGS -Wunused-parameter "
  2061. # These interfere with building main() { return 0; }, which autoconf
  2062. # likes to use as its default program.
  2063. CFLAGS="$CFLAGS -Wold-style-definition -Wmissing-declarations"
  2064. if test "$tor_cv_cflags__Wnull_dereference" = "yes"; then
  2065. AC_DEFINE([HAVE_CFLAG_WNULL_DEREFERENCE], 1, [True if we have -Wnull-dereference])
  2066. fi
  2067. if test "$tor_cv_cflags__Woverlength_strings" = "yes"; then
  2068. AC_DEFINE([HAVE_CFLAG_WOVERLENGTH_STRINGS], 1, [True if we have -Woverlength-strings])
  2069. fi
  2070. if test "$tor_cv_cflags__warn_unused_const_variable_2" = "yes"; then
  2071. AC_DEFINE([HAVE_CFLAG_WUNUSED_CONST_VARIABLE], 1, [True if we have -Wunused-const-variable])
  2072. fi
  2073. if test "x$enable_fatal_warnings" = "xyes"; then
  2074. # I'd like to use TOR_CHECK_CFLAGS here, but I can't, since the
  2075. # default autoconf programs are full of errors.
  2076. CFLAGS="$CFLAGS -Werror"
  2077. fi
  2078. fi
  2079. if test "$enable_coverage" = "yes" && test "$have_clang" = "no"; then
  2080. case "$host_os" in
  2081. darwin*)
  2082. AC_MSG_WARN([Tried to enable coverage on OSX without using the clang compiler. This might not work! If coverage fails, use CC=clang when configuring with --enable-coverage.])
  2083. esac
  2084. fi
  2085. CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent $TOR_CPPFLAGS_openssl $TOR_CPPFLAGS_zlib"
  2086. AC_CONFIG_FILES([
  2087. Doxyfile
  2088. Makefile
  2089. config.rust
  2090. link_rust.sh
  2091. contrib/dist/suse/tor.sh
  2092. contrib/operator-tools/tor.logrotate
  2093. contrib/dist/tor.sh
  2094. contrib/dist/torctl
  2095. contrib/dist/tor.service
  2096. src/config/torrc.sample
  2097. src/config/torrc.minimal
  2098. src/rust/.cargo/config
  2099. scripts/maint/checkOptionDocs.pl
  2100. scripts/maint/updateVersions.pl
  2101. ])
  2102. if test "x$asciidoc" = "xtrue" && test "$ASCIIDOC" = "none"; then
  2103. regular_mans="doc/tor doc/tor-gencert doc/tor-resolve doc/torify"
  2104. for file in $regular_mans ; do
  2105. if ! [[ -f "$srcdir/$file.1.in" ]] || ! [[ -f "$srcdir/$file.html.in" ]] ; then
  2106. echo "==================================";
  2107. echo;
  2108. echo "Building Tor has failed since manpages cannot be built.";
  2109. echo;
  2110. echo "You need asciidoc installed to be able to build the manpages.";
  2111. echo "To build without manpages, use the --disable-asciidoc argument";
  2112. echo "when calling configure.";
  2113. echo;
  2114. echo "==================================";
  2115. exit 1;
  2116. fi
  2117. done
  2118. fi
  2119. if test "$fragile_hardening" = "yes"; then
  2120. AC_MSG_WARN([
  2121. ============
  2122. Warning! Building Tor with --enable-fragile-hardening (also known as
  2123. --enable-expensive-hardening) makes some kinds of attacks harder, but makes
  2124. other kinds of attacks easier. A Tor instance build with this option will be
  2125. somewhat less vulnerable to remote code execution, arithmetic overflow, or
  2126. out-of-bounds read/writes... but at the cost of becoming more vulnerable to
  2127. denial of service attacks. For more information, see
  2128. https://trac.torproject.org/projects/tor/wiki/doc/TorFragileHardening
  2129. ============
  2130. ])
  2131. fi
  2132. AC_OUTPUT